4 pounds fresh fish bones, heads, trimmings of white fish such as halibut, whiting, flounder or fresh or cooked shellfish shells, shrimp heads, tails, etc.
2 thinly sliced onions
12 - 16 parsley stems (don't use the leaves as they will cloud the broth)
2 teaspoons fresh lemon juice
1/2 teaspoon salt
2 cups dry white wine
Cold water to cover the ingredients