Blue Cheese burger with red onion relish | Castello®️

Ingredients

• 1¼ cups water
• ¼ cups oil
• 1 egg for brushing
• ½ oz yeast
• 1 tsp salt
• 1 tbsp sugar
• 5¼ oz durum wheat flour
• 14 oz wheat flour
• 2.1 oz butter
• sesame seeds to sprinkle on top
• 5 - 6 red onions
• ⅞ oz butter
• 2 tbsp brown sugar
• 2 - 3 sprigs of thyme (or ½ tsp dried thyme)
• ½ cups red wine (can be omitted)
• ½ cups balsamic vinegar or sherry vinegar
• salt
• pepper
• 1 tbsp mayonnaise
• 4 tbsp honey
• 1 - 2 tbsp coarse ground mustard
• lemon juice (to taste)
• 1.7 pounds beef mince
• 1 pack sliced blue cheese
• 1 large beef tomato
• salads