Burger buns (10 pcs.)
Mix the egg, water, oil, sugar and yeast together until the yeast dissolves. Mix the two types of flour with the salt. Add 2/3 of the flour mix to the liquid mixture and stir together. Continue adding the last part of the flour mixture until you can touch the dough without it sticking to your fingers. Knead the dough for about 5 minutes, then a small cube of cold butter. Knead until it is incorporated into the dough.
Let the dough rise under a cloth for one hour. Place the dough on a board sprinkled with flour. Divide the dough into 10 equal portions. Roll it out to the buns and place them on a baking sheet. Let them rise for another half hour. Brush with egg and sprinkle with sesame.
Bake the buns at 200 degrees for about 12-15 minutes. They must have a bit of color and sound hollow when you knock them on the bottom.
Red onion relish
Cut the onions into thin strips and fry them at low to medium heat in butter until lightly caramelized. It will take approximately 10-15 minutes. Add thyme, brown sugar, red wine and vinegar. Let cook until the liquid has boiled down. Season with salt and pepper.
Honey mustard dressing
Stir together the mayonnaise, honey and mustard. Season with lemon juice, salt and pepper to taste.
Additional ingredients (for 6 burgers)
Form 6 equal patties of meat. Season them with salt and pepper. Put them on a scorching grill for 3-4 minutes on each side - however, the needed time depends slightly on the heat of the grill. If it can not be quite so warm, you might need to leave them on for a few extra minutes. After flipping the burgers, you can add the cheese on the grilled side. When you are done grilling the meat, you can use the grill to warm up the burger buns.
Split the buns and spread dressing on both cut sides. Add a leaf of lettuce and a slice of tomato. Top with the meat and relish. Close the burger. Enjoy!