To achieve those desirable nooks and crannies in your English muffins, it's crucial to allow the dough to undergo a sufficient proofing process. This involves letting the dough rise adequately before cooking. Additionally, ensuring that the dough is not over-kneaded and using the right amount of leavening agents (such as yeast or sourdough starter) will contribute to the formation of those delightful pockets in the muffins. This recipe also includes Milk Powder, which helps with a soft dough texture and naturally high rise.