When I had my cafe I'd run with up to 10 single estate beans at one time, then I'd try them both individually, and as custom blends by combining various components and ratios Some of those combinations ended up becoming custom hose blends that my roaster would then blend and.package for me, and some would only exist in the moment for a day or sometimes even a half day Considering we'd do between 200 to 300 meals per day on the weekend and twice that number of coffees - I'd have to say that his was a pretty winning combination! P