Keto Grilled Steak & Veggie Kebabs

Ingredients

• 1/2 cup olive oil
• 1/3 cup tamari soy sauce
• 1 tbsp cider vinegar
• 1/2 tsp salt
• 1/2 tsp pepper
• 1 1/2 tbsp fresh ginger
• 5 garlic cloves
• 1 lb sirloin steaks
• 1 green bell pepper
• 1 red onion
• 8 oz. mushrooms
• 4 skewers (metal or wooden)
• 4 tbsp mayonnaise