This is one of my favorite ways to make shrimp. It's a quick and easy marinade and all you have to do is let them soak for approximately 1-2 hours in the fridge then skewer and grill.
2lbs raw shrimp (I buy them with the shell on but I deshell them and devein them)
1/4-1/2 cup sugar (depends on how sweet you want it)
~1/4 cup freshly squeezed lime juice
1tbsp minced garlic
1tbsp chopped cilantro (I couldn't find fresh so I used some dried)
First you want to mix all your marinade ingredients in a tupperware container. It needs to be a container that you can seal up tight. Next, shell the shrimp and devein them. You want the tails off as well so you don't have to get all messy when eating them. After your shrimp are cleaned and prepared put them into the container with the marinade, seal, and shake vigerously. This will help to ensure each shrimp is evenly coated with the cilantro and that they've all settled into the sauce.
Refridgerate for at least 1-2 hours. I typically let them sit for about 2-3. Then skewer and place on a hot grill until pink.
You can serve these anyway you want really. You can put them in tacos, serve them as fajitas with some sauteed peppers and onions, use them in burrito bowls, or eat them as is served with a side of spanish rice and beans.