I made this test batch using the zest of 10 oranges and otherwise the same methodology as the lime-infused batch, 3 weeks infusion with a bottle of 100 proof Smirnoff vodka filtered four times and simple syrup with 2.5 cups water and 2 cups sugar. This batch was easy to distinguish from Limoncello from the color alone. It wasn’t bright orange but it was orange enough to tell.
It had a nice aroma of orange as well but the flavor didn’t pan out nearly as well as the lime batch. It wasn’t nearly as bad as the batch I made with orange last year, but it isn’t great. It’s overly sweet (my fault) and the orange flavor tastes like orange peel rather than oranges. This makes perfect sense but I don’t know why lemons and limes don’t seem to have the same issue. It may be the type of oranges I’m using, I’m not sure. I did use organic oranges, which should have been better than normal ones. Not a successful test. If anyone has an idea why, let me know.