You might need to buy:
- xtra cod liver oil left in 3 cans of cod livers after you’ve eaten the livers
- Olive oil – enough to create a ratio of about 3/4 of cod liver oil to a 1/4 olive oil – about 1 cup total oil
- spoonful of dijon mustard
- Unrefined salt to taste
- Lemon juice to taste [recipe moderator comment: usually about 4 teaspoons to 3/4 cup of oil or so works well]