Creamed Finnan Haddie on Toast

Ingredients

• 2 lb Finnan Haddie.
• 2 Medium onions, diced, about 12-oz.
• 2-cups of milk.
• 2-cups heavy cream.
• 1-tsp Colman’s English mustard powder.
• Dash Cayenne pepper.
• 6-oz unslated butter, divided use.
• 3/4-Cup plain flour.
• 1 bunch green onions, thinly sliced on diagonal, whites and greens.
• 1 bunch parsley, minced.
• White wine.
• Lemon juice.
• Salt and fresh ground black pepper.
• 10 hard boiled eggs, peeled, quartered lengthwise.
• 6-8 slices crusty toast, buttered, torn into half pieces (Sourdough is great).