In a greased 6-qt. electric pressure cooker, combine cream cheese, sour cream, mustard and garlic powder until smooth. Stir in beer; add bacon, reserving 2 tablespoons. Lock lid; make sure vent is closed. Select manual setting; adjust pressure to high, and set time for 5 minutes. When finished cooking, quick-release pressure according to manufacturer's directions.
Select saute setting, and adjust for normal heat. Stir in cheese and heavy cream. Cook and stir until mixture has thickened, 3-4 minutes. Transfer to serving dish. Sprinkle with onion and reserved bacon. Serve with pretzel bun bites.
Old world hops meet new in Old Yale Brewing's Knotty Blonde; carefully crafted to have a subtle grapefruit flavor with a frothy, creamy head. Clean and crisp.