Best Fish Tacos

Recipe:

3 lbs Tilapia or Mojarra

1-2 tbsp Mustard (preference)

1 tbsp Black Pepper

1 tbsp Cajun Seasoning

1 tbsp Garlic powder

Batter:

2 cups flour

1-2 tbsp mustard

2 tbsp Black Pepper

2 tbsp Garlic Powder

2 tbsp Cajun Seasoning

1 1/4 beer (or you can replace 1/4 beer with mineral water if you do not want too much beer in your batter)

Avocado Salsa:

6 chile serranos

1 Avocado

1 tbsp chicken bullion or salt (optional)

1/2 water  (?cup?)