Combine cheeses in a bowl with flour.
Add beer to a small pot and bring up to a bubble over medium heat.
Reduce the heat to simmer and add cheese in handfuls.
Stir constantly, melting the cheese in batches.
Stir in a figure-eight pattern with wooden spoon.
When the cheese has been incorporated fully, stir in the mustard, hot sauce and Worcestershire sauce.
Transfer fondue to warm fondue pot.
In a large skillet, bring 2-inches of water to a boil and blanch the cauliflower for 2-3 minutes, drain and arrange around the fondue pot.
In the same pan, bring the cooking water back to a boil and add the mini franks and sliced wursts.
Cook, uncovered until all the liquid has evaporated.
Add 1 tablespoon butter to the pan to crisp the casings.
Pile wursts and dogs near fondue.
Complete the dipping selections with dishes of pickles, onions and cubed bread.