Cold brew brewing and holding vessel

Holds coffee and cold water in contact for a long unattended period, separates them cleanly at the end of it, and then holds the resulting batch as a food until it is sold.

Cold brew is a slow extraction at ambient or refrigerated temperature, and the equipment question is almost entirely about SEPARATION and about the HOLD — not about the brewing, which happens on its own whatever it happens in. Two families. IMMERSION keeps grounds and water together in one vessel for the whole period and then parts them, either by lifting a filter basket or brew bag out or by draining the liquid down through a filter. Everything that goes wrong with immersion goes wrong at that moment: a weave too coarse sheds fines into the batch, a basket full of saturated grounds is far heavier than the person who has to lift it expects, and a filter that clogs turns a five-minute drain into an hour of standing over it. SLOW DRIP passes cold water through a bed of grounds one drop at a time under gravity, so extraction and separation happen continuously and there is nothing to lift; it produces a different and usually lighter cup, it is a display object, and its drip rate is a manual adjustment that drifts while nobody is watching. The property that outranks both families is that a completed batch is A LARGE VOLUME OF FOOD, HELD FOR A LONG PERIOD, IN A VESSEL NOBODY IS WATCHING — often at ambient temperature for the brewing part of its life. That makes the vessel a food-safety object before it is a brewing one: food-grade, sealable, labellable, cold-held where the site's standard requires it, and cleanable all the way to the seal and the tap. Every decant between vessels is another handling, another surface and another chance to lose the label, so the cleanest equipment answer is a vessel the coffee is brewed in, held in and dispensed from, where the liquid is exposed once.

SIZE FROM THE HOLD, NOT FROM THE BREW. A batch occupies a vessel and a shelf of cold storage for the whole of its life, not just while it is brewing, so the binding constraint in almost every bar is refrigerated space rather than brewing capacity. Measure the fridge, and measure it with everything else that has to live in it, before you choose a vessel size.
Buy for the SEPARATION STEP, because that is where the labour, the mess and the injuries are. Lift a full basket at the working height it will actually be lifted at, with wet hands, before committing to a size. A vessel one person cannot decant safely at the end of a shift will be decanted badly, decanted late, or left for somebody else.
Prefer a vessel the coffee is brewed in, held in and dispensed from. Every decant is another handling, another surface, another chance for the batch to lose its label, and another point at which a busy person makes a judgement about a container they did not fill.
Treat LABELLING as an equipment decision here, not as paperwork. Buy vessels with a surface a label sticks to and comes off cleanly, or with an integral writable panel. A batch whose age cannot be established is a batch nobody can make a decision about, and what happens to it is set by the site's food-safety standard rather than by whoever finds it.
Ask at purchase how the tap, the seal and the gasket come apart, and whether spares are available and from whom. Any part that cannot be stripped will be rinsed, and a tap is the one component on a cold brew vessel that holds liquid out of sight between services.
Take the recipe from the cold brew SOP, never from the leaflet the vessel arrived with. A supplier's suggested method was written for an unnamed coffee at an unnamed grind in unnamed water, and this entry deliberately states no ratio, time or yield for the same reason — the method has one owner and it is not the equipment page.
Decide refrigerated against ambient brewing before you buy, and decide it against the site's food-safety standard rather than against the space you happen to have. It changes the cold storage this purchase requires, and discovering that after the vessels arrive means either a second fridge or a method nobody signed off.
Plan the batch cadence against demand and against the fridge together. Cold brew's real problem is never making it — it is having the right amount ready: too little and the menu item is off for a day and a half, too much and a dated batch is discarded. Both failures are cheaper to design out than to manage.
Assess nitrogen or any pressurised dispense as an installation, not as an accessory. Gas supply, regulator, line, coupler, cleaning routine, spares and somebody to call — the vessel is the smallest part of that decision and the only part most people cost.

Almost none of this item's life is on the bar. Brewing and separation happen in prep, away from service and at a height and a sink that suit lifting; the hold happens in refrigerated storage; and only the dispense point belongs at the cold build position, within reach of ice and vessels. That split is the argument for a vessel that dispenses: it is the only shape in which the object at the bar and the object in the fridge are the same object, so nothing is poured between them in the middle of a service. A tower is the exception and it is a deliberate one — it sits in the guest's sightline because being seen is what it is for.

Buying brewing capacity without buying the refrigerated space to hold what it produces.
Choosing a vessel nobody on the rota can lift or decant safely when it is full.
Decanting between vessels because the brewing vessel cannot dispense, and adding a handling to every batch for the life of the equipment.
Treating the tap as a fitting rather than as a food-contact part with a seal and an internal path.
Taking the ratio and the steep time from the vessel's leaflet instead of from the cold brew SOP.
Brewing at ambient without first establishing what the site's food-safety standard permits.
Running an undated batch, and discovering it is undated at the point somebody has to decide about it.
Buying a slow-drip tower to produce volume, when it is a display method with low throughput and a drifting drip rate.

Two footprints, not one, and the second is the one that gets forgotten: bench space while the batch is being made and separated, and REFRIGERATED space for the whole life of the batch after it. A vessel bought to fit the counter and not the fridge produces a batch that has nowhere to go at exactly the moment it must be cold.
Height to lift a saturated filter basket clear of the vessel without tipping it, at the working height it will actually be at, and access under a tap for the largest vessel that will ever be filled from it. A tower needs standing height above a counter and a stable base that will not be knocked during service.
Treated cold water from the same path the rest of the bar uses, because cold brew is mostly water held for a long time and any fault in it has a long time to become obvious. A wash-up route that takes the largest vessel, its basket and its dismantled tap is a requirement, not a preference — a vessel too large for the sink is a vessel that gets wiped.
If the brewing stage happens outside refrigeration, the room temperature during that stage is a food-safety input and not a detail. What is permitted, and for how long, is set by the site's food-safety standard and confirmed by whoever holds it — this platform states no temperature and no duration.

Food-grade vessel with a lift-out filter basket or brew bag
The simplest arrangement: a sealed container, a permeable insert holding the grounds, and a lid.
Cheapest to buy, easiest to replace, and it scales by owning more of them rather than by owning a bigger one — which is often the right answer, because several smaller batches are easier to rotate, label and fit into a fridge than one large one. It pays for that at the separation: lifting a saturated basket is the heaviest and messiest step in this category, and it is done by hand at the end of a long hold.
Immersion vessel with an integrated filter and a tap
One vessel in which the coffee is brewed, held after separation, and dispensed without being poured out.
The liquid is exposed once, which is the strongest food-safety property available in this category and the reason to prefer this shape over a cheaper one. The tap is the price: it is now a food-contact fitting with an internal path and a seal, it must come apart to be cleaned, and it is the single component most reliably skipped on a busy close.
Sealed pressurised vessel with a dispense tap
A stainless sealed container held under gas pressure and dispensed through a line, optionally charged with nitrogen for texture.
Sealed, stackable, cold-held and dispensed without the vessel ever being opened, which is the best hold in this list. It also stops being a vessel purchase and becomes a dispense installation: a gas supply, a regulator, a line and a coupler, each with a cleaning routine and a supplier relationship. A nitrogen-charged pour also makes a claim about texture in front of the guest that the coffee itself has to be able to support.
Slow-drip tower
A tall stand holding a water chamber above a grounds bed above a collection vessel, with an adjustable drip valve between them.
A display object and a distinct menu item, and it should be assessed as both rather than as a production method — throughput is low, attention is high, and the drip rate is a manual setting that drifts over the length of a run with nobody standing there. It earns its counter space by being looked at and by being ordered by name. Buying one to produce volume is the mistake this variant exists to name.
Refrigerated brewing against ambient brewing
Not a vessel type but the condition the vessel is kept in for the brewing part of the batch's life.
Brewing cold slows the extraction and keeps the batch out of the temperature range a food-safety standard cares about most, at the cost of occupying refrigerated space for the whole brewing period as well as the holding one. Brewing at ambient frees that space and puts a large volume of food in exactly the range the standard is written about. Which one your site uses is set by the SOP and the standard rather than by preference, and it changes how much cold storage this purchase actually needs.

The cup is silty and sediment settles in the glass while the guest is holding it.
A filter weave too coarse for the grind, a bag that has stretched with use, or the batch disturbed during a decant that stirred the settled bed back into suspension.
Every serving from that batch, and a guest complaint that reads as a coffee fault rather than an equipment one — which is why it is usually answered by changing the coffee.
The separation takes far longer than planned and somebody stands over it.
A clogged filter, usually because the grind is finer than the vessel's separation method can handle — a grinder decision arriving as an equipment problem.
Prep labour at the worst possible time, and a batch that finishes later than the schedule assumed, which pushes the next one and eventually puts the menu item off.
Batches taste noticeably different from one week to the next with no change to the recipe.
An uncontrolled brewing temperature — ambient brewing in a room that changes with the season — or a drip rate on a tower that was adjusted by somebody and never recorded.
Consistency across the item the menu sells most in summer, and a search for the cause that starts at the coffee and ends nowhere because the variable is the room.
A vessel of uncertain age is found in the fridge and nobody will say when it was made.
Labelling treated as a habit rather than as part of the vessel routine, or a label that fell off a wet, cold surface.
The batch, and the confidence in every other batch beside it. What must happen to unlabelled food is set by the site's food-safety standard, and the honest reading is that the decision has already been taken out of the operator's hands.
The drink tastes sharp or shows gas that was not put there deliberately.
A batch held past what the standard allows, or a tap and seal that were rinsed rather than stripped, holding liquid out of sight between services.
A food-safety incident rather than a quality one, and the component responsible is the cheapest and least visible part of the whole vessel.

Cold brew brewing and holding vessel

Related tools

Cleaning and care

Materials

Reference

Related articles