The primary ingredient used in traditional English crumpets is flour. Specifically, bread flour or a combination of strong white flour and whole wheat flour is commonly used to achieve the desired texture. The flour is mixed with warm milk, water, yeast, and a bit of salt to create a batter, which is left to rise and develop. The result is a light, airy crumpet with characteristic holes on the surface, perfect for holding butter and other toppings. Crumpets are a popular tea-time snack in the UK, enjoyed toasted and with various spreads.