mushroom ketchup, half a teaspoon each of garlic powder, onion powder, and paprika.
I grilled the burgers, and when they were almost ready, I layered on some of the pastrami and the Swiss cheese, to let the cheese melt over it. Unfortunately, hamburger buns don't come in rye, so I used whole wheat. I toasted the buns on the grill. I put a thin layer of spicy brown mustard on the bottom bun. I layered homemade thousand island dressing, and warm sauerkraut on top of the burger.
To go with the burger, I wilted red chard with balsamic vinegar.
Thousand Island Dressing1/3 cup mayonnaise
2 Tbsp. sweet pickle relish
3 tsp. ketchup
Whisk together all ingredients.