Classic gourmet hot dog - United States / Canada

Ingredients

• 40 g (1.5 oz) yeast
• 4 dl (11 cups) lukewarm soda
• 640 g (5 cups) wheat flour
• 1 egg
• 50 g (¼ cup) butter, melted and cooled off
• 2 tbsp sugar
• 1½ tsp salt
• Milk for brushing
• Sesame seeds to garnish (option)
• Some oil
• 4 large, peeled onions
• 1-1½ dl (0.4-0.6 cup) wheat flour
• Salt
• 1 l (¼ gal) flavourless oil, we like using rapeseed oil
• 12 good BBQ sausages
• Ketchup
• Mustard
• Cress
• Pickled red onions
• Pickled mustard seeds