The Best New Orleans Bbq Shrimp. Ever. - cooking recipe

Ingredients

2 lbs shrimp, whole, fresh (heads AND tails attached)
1/2 large yellow onion, diced
4 garlic cloves, smashed
1 cup butter, cut into small pieces
4 tablespoons olive oil
4 dashes Worcestershire sauce
1 (12 ounce) bottle beer, Abita Amber Ale
1 large lemon (juice and zest)
2 teaspoons garlic powder
2 teaspoons crab boil (I like Zatarain's)
fresh cracked pepper
coarse sea salt
cayenne pepper (optional)

Preparation

Put the shrimp in one layer in a shallow baking dish that can go in the broiler and sprinkle lightly with coarse sea salt.
Dice the onion up and smash the garlic really well with the flat side of a big knife. Don't cut up the garlic, just smash it.
Heat the olive oil in a saucepan and saute the onions until they're translucent.
Add the smashed garlic, lemon zest, and the butter to the saucepan. Stir it up.
Once the butter has melted, add all the seasonings - garlic powder, crab boil, LOTS of cracked pepper (I don't know my exact measurement but I'd say probably 30 \"cracks\" of the pepper cracker), and 4 big slugs from the Worchestershire sauce bottle. Keep stirring.
Taste to see if it's spicy enough for you, and if it isn't, add some cayenne - there's cayenne in the crab boil, but some people like a higher level of spiciness than the crab boil can provide.
Dump in 2 more tablespoons of olive oil and the juice of the lemon while continuously stirring.
Add half of the beer (keep stirring!) and drink the rest (while stirring.) Once all the foam from the beer is gone and it's bubbling again it's ready.
Pour the sauce over the shrimp in the baking dish, stir it around, and put it in the broiler.
Broil for 8 minutes and then stir it up and broil for 5 more minutes (longer if your shrimp are super gigantic) until the shrimp look done (nice and pink) and you have some good brown crusties on top. The shallower your dish is the better it will be - you want the sauce to almost just barely-ish not cover the shrimp so the little bit of exposed surface browns.
Let it rest for 10 minutes before eating. Serve in a bowl with tons of sauce and hot french bread for dipping!