Ingredients
4 Tbsp butter
1/4 cup grated onion (about 1/2 medium onion)
3 Tbsp flour
2 tsp ground mustard
1 cup beer, like an IPA, room temp
1 cup whole milk or heavy cream, room temp
1 cup shredded sharp white cheddar cheese
2 cups shredded cheddar cheese
1 tsp kosher salt
1 tsp freshly ground pepper
1-2 tsp tabasco sauce
Instructions
In a medium saucepan over medium-high heat, melt the butter. Add the grated onion and cook until the onion is translucent, about 3 minutes. Add the flour and ground mustard, whisking until a bubbly, thick roux has formed, about 2 minutes.
Whisking constantly, slowly pour in the beer. Again, working very, very slowly, pour in the cream and whisk until the sauce thickens a bit, about 5 minutes.
Add the grated cheeses and whisk until the beer cheese dip is smooth. Season with salt, pepper and Tabasco, adjusting to taste.