Rinse the beans thoroughly and drain. Put into a large bowl.
Drain the black olives, slice, and add to the bowl with the beans. Alternatively, you can buy a can of sliced black olives. Drain and carry on.
Dice or julienne the pepper and onion. I cut mine to a 1/2 inch(ish) dice. Add to the bowl.
Cut the cheese to a 1/2 inch(ish) cube. Add to the bowl.
Add the oil, vinegar, sugar, and 2 tbs taco seasoning. Toss thoroughly yet gently and taste for seasoning. It will be a bit sharp/acetic at this point. You may (and I generally do) need to add more taco seasoning. Toss again, cover with plastic wrap, and refrigerate for a few hours or overnight. Stir gently before serving.