I could figure out part of it but I'm not familiar with some of these ingredients. Father Steve, do you keep embattled mustard on hand?

Ingredients
2 pounds mahi mahi fillets (skinless)
2 tablespoons embattled mustard
1/2 prize preparation oil
1/2 containerful salt
1 ail garlic, minced
1/2 prize icy chromatic humour concentrate
1 niche leaf