Teriyaki Beef with Pineapple Salsa

So I posted this recipe on my blog, and then thought (and was reminded) that I should also put it here! I've sufficiently talked it up elsewhere, so I'll just post the recipe and call it a jour.

2 2-pound beef triangles (whatever that means... basically just beef)

Teriyaki Sauce (You can possibly half this, depending on how much beef you have).

2 cups soy sauce

1 cup pineapple juice

½ cup brown sugar

1 tsp ground ginger

1 Tbsp chopped garlic

Pineapple Salsa: (we ended up omitting the red onion and green pepper. Just saying... Additionally, a lot of these measurements we just eyeballed what looked good. If you're making a smaller amount of beef like I did, you probably won't need to use the whole pineapple.)

1 pineapple, diced small

¼ cup chopped red onion

¼ cup chopped green onion

¼ cup chopped green pepper

¼ cup chopped red pepper

2 Tbsp sugar

2 Tbsp chopped cilantro

(Mix well and let sit at least 3-4 hours)

Place beef triangles in sealable plastic bag or glass dish. Combine teriyaki sauce ingredients with whisk and pour over beef triangles. Place in refrigerator. Marinate for 3-4 hours or overnight. Broil or grill to desired doneness. Serve with pineapple salsa.