Pre-heat oven to 350°F.
Toss cubed potatoes in a bowl with olive oil, minced garlic, salt, and pepper.
Place potatoes on baking sheet. Bake for 30 minutes or until brown and crispy. Shake the tray several times to check on crispness.
In a medium saucepan, add beer, half and half, flour and mustard powder. Warm the liquid and begin adding the cheese while whisking until melted.
Remove from heat and add black pepper, salt, and nutmeg.
Place back on stove and cook while stirring to get a smooth consistency. Add more beer if it is too thick or more cheese if too thin.
Transfer mixture to a fondue pot fitted with either a votive candle or sterno.
Top with bacon and stir. Serve with roasted potatoes. To keep the fondue at its ideal consistency, stir it intermittently.