This time of year a good drink is, by definition, a cold one. The right ice matters, too—an old fashioned demands a big, clear, slow-melting cube; a julep isn’t a julep without crushed ice. And for soft drinks, the only right ice is the so-called good ice: the sort of chewable “nugget” made popular at Sonic Drive-In restaurants. The jet-black $699 Opal nugget ice maker dispenser from GE Profile produces exactly that: pinkie-tip-size pellets of compressed ice flakes. And with a 16-by-17-inch footprint, it can do it right from your countertop.