Preheat grill.

Mix tomatoes, onions, peppers, coriander, jalapeno and quarter teaspoon salt in a bowl. Allow to sit for half hour. Pour off juice and add honey and vinegar. Refrigerate half hour.

Rub mushrooms with oil and season with salt and pepper. Grill on both sides until done. Season burgers and grill on both sides until medium rare.

Layer with portabello on the bottom, salsa, then meat and topped with additional salsa. Add coriander to garnish.