I made this today and used less than 3 cups of vanilla ice cream, since the package for it was too small and some of it eaten before, with the unaffected 1/4 cup of orange juice to make this one serving of it. The orange flavor was there, but it was tart and I think it's because it was a Florida's Natural orange juice. It wonder how it'd taste with homemade orange juice. Anyway, the milkshake was fine.