If you can’t or won’t eat dairy products, commercial alternatives to sweetened condensed milks aren’t readily available. You can make your own by reducing your favorite non-dairy milk — soy, rice, nut or coconut — by gently simmering it, as you would with dairy milk. Simmer 2 1/2 to 3 cups of your chosen milk substitute down to 1 cup, and then add the same 2/3 to 3/4 cup of sugar you’d use with dairy milk. For a vegan version, use vegan-friendly raw or unfiltered sugars that aren’t refined through bone charcoal. Non-dairy milks vary pretty widely, so if one doesn’t do justice to your recipe, try again with a different type.