When it’s just us two I do 2 potatoes, 1 tsp butter 1 tsp olive oil, 1/2 tsp garlic, 1 sprig rosemary, salt and pepper. In the picture I took this to a family meal (maybe Easter last year?) and I used 6 potatoes, 1 heaping tablespoon of garlic, 2 TBS butter, 1 TBS olive oil, 3 longer sprigs of rosemary.