This Grilled Pheasant Breast Sandwich piled high with marinated tomatoes and fresh mozzarella uses a balsamic mayonnaise for the perfect grilled pheasant marinade.
Pour 2 cups of the water into a 2-quart or larger saucepan (large enough for the brine and submerged pheasant) with the 3 Tablespoons of salt. Bring to boil and stir to dissolve salt.
Remove from heat, pour in remaining 1 cup water and stir well. Cool completely before using (I cool about 30 minutes at room temperature then refrigerate for 1 hour). DO NOT put pheasant in before completely cool. Getting the brine cold first helps to prevent bacterial growth.
Submerge pheasant in brine, cover and refrigerate for at least 1 hour or up to 4 hours, but no more or it will be too salty!
When you are ready to cook the pheasant breasts, take them out of the refrigerator, rinse off the brine with cool water, set on a large plate, and pat dry with a paper towel.
Preheat the grill on high heat while you make the balsamic mayo, marinated tomatoes, and prep the bread.
Place the slices of bread on a large plate and brush each side lightly with olive oil. Set aside.
Make the balsamic mayo. In a small bowl, whisk together the mayonnaise, balsamic, salt, pepper, onion, powder, and garlic powder. Add ¼ cup of the balsamic mayo to the plate with the pheasant, tossing to coat evenly. Set aside.
Make the marinated tomatoes. In a medium bowl, whisk together the olive oil, balsamic, garlic, salt, and pepper. Add the tomato slices and stir gently to coat.
Place the pheasant breasts on the hot grill, then reduce the heat to medium-high heat. Cover and cook until char marks appear, about 3 minutes.
Flip the breasts over, then top each pheasant breast with a slice of mozzarella. Close the grill lid and cook until the cheese is melted, and the pheasant internal temperature reaches 155 degrees F using an instant-read meat thermometer, about 2 minutes more. Remove grilled pheasant breasts and transfer to a large plate and let rest while you grill the bread.
Grill bread for 1 to 2 minutes per side, until crispy and just starting to char on the edges.
Spread 2 teaspoons of the remaining balsamic mayo on 1 side of each slice of bread. On the bottom of bread slices, add ¼ cup of lettuce, one grilled pheasant breast, and marinated tomatoes. Top with the remaining slices of bread, mayo side down. Serve immediately.