We tried the Welch's wine last night, made with the EZ Cap. It did not taste like wine exactly. It tasted like sparkling grape juice, but with a mild alcoholic kick. It didn't taste bad, and we did each get a slight buzz off too glasses, but it did not taste like wine, so we will not be selling it on our Web site.
They tell you how to make non-sparkling wine by not using their cap and putting plastic wrap with a hole over the top of the bottle, but then why bother buying the EZ Caps? Just go out and get some yeast. Also, they don't call for sanitizing things, which bothered us, although the "wine" we made in a club soda bottle did not get infected with anything. Anyway, that's the result of our test with EZ Caps.