Add watercress and cook 2 minutes, until just wilted, and place mixture in a food processor.
Add the pea greens or watercress and toss for 30 seconds.
Finally, add some spinach and watercress and drizzle over the sauce.
In a large bowl, add the beets, grapefruit segments and watercress.
Melt 1 tablespoon of butter in a large pot, and add spinach and watercress.
Just before serving, add watercress and toss until evenly dispersed.
Add watercress and basil, and cook until wilted, about 1 minute.
Add the lettuce, watercress, tomatoes and the sliced onion.
Add stock, scallions, watercress or arugula if you like, and stir.
Add peas, simmer for 1 minute, add watercress, and remove from heat.