Soya milk (long-life)

How long it keeps

Not yet sourced. We have not found a figure for this from an authority we are willing to quote, so the field is left empty rather than filled with a plausible guess. Go by the date on the pack.

What ends it. Unopened it keeps for a long time. The clock that matters starts when you open it. How to make it last longer

Long-life soya milk

Long-life soya milk is the plant milk that behaves most like milk. It has protein worth counting, 2.4 g per 100 ml in CoFID’s figure for the unsweetened, fortified kind, against 3.3 g for semi-skimmed UHT cow’s milk, and it heats, thickens and makes a custard or a porridge without falling apart.

It can split in coffee when the coffee is very hot or very acidic. Warming the soya milk first helps more than stirring.

How long does it keep?

Unopened: USDA FoodKeeper does not give long-life soya milk an unopened figure, so the date on the carton is the one to go by. Cartons sold on the ambient shelf need no fridge until they are opened; chilled soya milk is a different product and does.

Opened: FoodKeeper gives soy milk 7 to 10 days in the fridge once opened; this site uses the lower figure. Without a fridge, the opened carton is the problem rather than the milk: buy the smallest carton you will finish in one go.

Check the label

Soya milks vary: sweetened or not, fortified with calcium and vitamins or not. CoFID’s figures here are for the unsweetened, fortified kind. For a long-life diet, fortified is the one worth carrying.

Storage

Cool, dark. The plant milk with protein worth counting, at 2.4 g per 100 ml against 3.3 for UHT cow milk, and the one that behaves most like milk in a hot drink. It can split in coffee if the coffee is very hot or very acidic; warming it first helps more than stirring does.

The pack

Typical UK size: 1000 ml
Weight packed: 1050 g
Volume: 1030 ml

Computed from net weight and standard pack geometry, not weighed. Manufacturers publish net weight and nobody publishes packed weight or displaced volume, so this is an estimate and is labelled as one.

Per 100 g

Deliberately narrow. These are the five things a long-life diet actually gets wrong, plus energy and protein. It is not a general nutrition model and is not meant to be.

Energy: 26 kcal
Protein: 2.4 g
Fibre: 0.5 g
Vitamin C: 0 mg
Vitamin A: 0 µg
Omega-3: 0.12 g
Sodium: 0 mg

Source: CoFID 2021, 12-524 Milk, soya, non-dairy alternative to milk, unsweetened, fortified