Plant milk stopped being an extra some time ago. On most London bars it is now a third to a half of milk poured, which makes it a cost line and a training line rather than a courtesy. The question is no longer whether to stock it, but which ones, and how many.
What a barista formulation actually changes
Standard plant milks are made for cereal and cooking. Barista versions add stabilisers and adjust fat and protein so the milk does two things: it holds a stable microfoam when steamed, and it does not curdle when it meets hot, acidic espresso. That second point is what stops a drink separating in front of the customer.
The difference is not marketing. Pour a standard oat milk into a hot single origin with bright acidity and you will see it split. Pour the barista version and it behaves.
Oat
Oat is the default request and the safest first plant milk on any bar. It steams close to dairy, foams well enough for latte art, and its mild sweetness suits medium and dark roasts.
Oatly is the brand customers name, which matters when someone asks what you pour. Minor Figures is the speciality bar favourite, and their organic version suits sites that carry organic on the menu.
Soya
Soya is the oldest option and still the most forgiving under steam, with more protein than oat, which is what builds foam. It carries espresso well without the flat, watery finish some almond milks give.
It is also usually the cheapest per litre of the barista options, which is worth knowing if plant milk volume has quietly become a real cost. Bonsoy is the speciality choice, Alpro Barista the everyday one.
Almond
Almond is lighter and nuttier, with fewer calories, which is why a certain customer asks for it by name. It foams less densely than oat or soya, so it suits flat whites and iced drinks more than a tall cappuccino.
Worth noting for allergen policy: almond is a tree nut. If your site runs a nut free kitchen, this is the milk that does not belong there.
Coconut
Coconut is the specialist option. It brings its own flavour, which is a problem in a delicate espresso and an advantage in iced coffee, matcha and anything tropical. Most sites hold it as a fourth milk rather than a core one.
How many should you hold?
Two is the practical answer for most cafes: oat as the default, soya as the second. Add almond if you have regulars who ask for it, and coconut only if your iced and matcha menu earns it.
Every extra carton is a fridge slot, a purge in the steam wand and one more thing to run out of on a Saturday. Three milks poured well beat five poured badly.
Practical notes for the bar
- Keep a separate jug for plant milk if you can, and rinse properly between milks
- Steam plant milk to a slightly lower temperature than dairy, since it scalds and thins sooner
- Store cartons cold before steaming, not at room temperature, which is the most common cause of a foam that will not hold
- Write the milk you pour on the menu, because the customer who asks is usually loyal to a brand
Browse the barista milk range, or open a trade account to see your pricing.