Herbed Mayonnaise - cooking recipe

Ingredients

1/4 lb. spinach leaves
2 Tbsp. chopped onion
1/4 c. watercress leaves
1/4 c. chopped parsley
1 Tbsp. tarragon
2 1/2 c. mayonnaise

Preparation

Put all ingredients, except mayonnaise, in a small saucepan and cover with boiling water.
Cook 1 minute.
Drain and rinse under cold running water.
Finely chop the mixture, or process quickly in a food processor.
Stir in mayonnaise.
Refrigerate until ready to use.