The heat wave may be past its punishing peak, but there are still lots of ice-cream days left this late summer — and plenty of premium outlets to discover in Tokyo.

When it comes to multi-flavored cups and sugar cones, the arrival of Ben & Jerry's in Omotesando raised the ante and created welcome competition in the middle ground between Baskin-Robbins and Grom. At the other end of the spectrum is the simpler pleasure of soft-serve ice cream — better known in Japanese simply as "soft cream."