In a medium saucepan, combine cream cheese and beer and whisk over medium heat until melted and combined.
Add cheddar cheese, Gruyere cheese, mustard, garlic powder, paprika, cayenne pepper, and white pepper. Whisk over low-medium heat until completely melted and smooth.
Do a quick taste test, and add salt and pepper to suit your preferences. If you'd like more heat or spice, try adding more cayenne pepper or some chili powder!
If it's not thick enough for your liking, let simmer over low heat, stirring occasionally.
Transfer to serving dish and serve immediately with your favorite dippers - pretzels, chips, bread, etc. Enjoy!
