Avocado Sandwich Spreads Dec 31, 1999 INGREDIENTS:Avocado-Horseradish Spread: 3 California avocados 1/3 cup finely chopped onion 1/3 cup lemon juice ¼ cup prepared horseradish (or to taste) ½ tsp. saltAvocado-Sweet Relish Spread: 3 California avocados ½...