"These shish kebab are so easy to prepare, not to mention colorful and very tasty. It's the perfect dish for a summer barbeque. Try serving with a side of white rice, French fries, or grilled baby red potatoes with fresh rosemary!"
Combine lager, white onion, cilantro, lime juice, garlic, salsa, red pepper flakes, salt, and pepper in a large bowl. Mix together until marinade is well blended. Add beef carefully. Cover with plastic wrap and refrigerate, 6 hours to overnight.
Thread the marinated beef, pineapple chunks, red onion chunks, green bell pepper pieces, mushrooms, and cherry tomatoes alternately through skewers. Place shish kebabs on a baking sheet or jelly roll pan.
Preheat grill for medium heat and lightly oil the grate. Grill shish kebabs until beef is firm and reddish-pink and juicy in the center, about 4 minutes per side.