Great question, Kimdy — we're so glad you're able to enjoy glorious homemade English muffins by the way! Often, a lack of air-holes is due to there being a bit too much flour in the dough. If you don't already, we recommend weighing your flour (along with your other ingredients) for best results. If you prefer to measure by volume, we recommend using the "fluff sprinkle scrape" method. Using one of these methods should give your dough the hyrdation it needs to produce those lovely, bubbly holes in your finished English muffins. Happy baking! Annabelle@KAF

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