I love this salad next to anything, even my bed! I could eat it all day and never be tired, ever. It refreshes and recharges me. If your rucola is large, tear it in half. I only use a little oil as the lemon carries this salad along and the avocado holds the richness. Needless to say your avocado must be a beauty — at full ripeness, but not past this. It can make or break the situation. If valeriana is unavailable, you could use picked watercress leaves.