We love the freshness the leaves of the celery bring to this, as well as the flavour-enhancing celery salt!  Equal parts vinegar & oil ensure that the beans really soak up all of the flavour. 

2 cans of mixed medley beans, drained and rinsed well 
2 green onions, finely chopped 
2 ribs of celery, including some leaves, finely chopped 
1 tsp. sea salt 
1 tsp. celery salt 
1/4 cup good quality red wine vinegar 
1/4 cup olive oil 

1. Simply mix everything together well in a bowl. 
2. Keeps well, refrigerated for 3-4 days.