Instructions

1. Drain, rinse and drain again the butter beans. Put them in a mixing bowl.
2. Drain the salmon, then add to the beans.
3. Chop the red pepper, cut the radishes into small wedges, cut the celery into thin slices and finely chop the onion. 
4. Add these to the beans. Add the garlic too, if used. 
5. Add the oil, lemon juice and zest. Season with salt and pepper, then toss well.
6. Finally, and some chopped parsley. Taste and adjust the seasoning to your liking.