Step 1

Measure the milk into a jug

Step 2

Stir in lemon juice or vinegar into the milk. Stir to combine. Let sit for 30 minutes at room temperature until the milk begins to curdle and becomes acidic.

Step 3

Use in place of buttermilk in the recipe as it calls for. And if you don’t use it straight away store it in the fridge for up to 3 days.