🥛 How to Make Buttermilk at Home | Easy Substitutes 🍋🥄 Lots of people have been asking about buttermilk and cannot always get it where they live, so here is a quick and handy way to make your own at home using ingredients most people already have. Quick Buttermilk Substitutes: 🥛 Milk Lemon Juice Add 1-2 tablespoon lemon juice to 350 to 400 ml milk. Stir and leave for 5 to 10 minutes until slightly thickened. 🥛 Milk White Vinegar Add 1-2 tablespoon white vinegar to 350 to 400 ml milk. Stir a