*You can use soured milk if you don’t have butter milk. Just put 1 1/2 Tbsp vinegar in a measuring cup and fill it to the 1 3/4 cup mark with milk. Let sit for 5 minutes before using. Or put 1/4 cup plain yogurt in a measuring cup and fill to the 1 3/4 cup mark with milk. Stir well.
Find it online: https://www.crosbys.com/irish-soda-bread-with-molasses/