I'll cut to the chase: these tasty, light apples are last week's mystery apple named.
The following tasting was without reference to my earlier description in the Adventure of the Scarlet Blush:
Medium-sized light green-yellow apple with a partial red blush that is streaky in spots. There are small spots that are dark green over the green and light colored against the blush. Very slight ribbing.
Fine-grained white flesh with a hint of green, juicy, crisp, and light. Sweetness tempered with some tart; sugar and banana notes, a tiny bit of spice, and mild astringent finish.
Note the unusual whiff of banana. And if you like, compare the two photos side by side.
Case solved. Also, if these apples are still around next week you should stop by Dick's Family Farm at Farmers market and get a few. (Nagog Hill Farm has them too.)
A note on the name: There seems to be some use of the name "Zest Star"--say that three times fast. "Zestar" is correct.
According to one source, these were originally dubbed "Zesta" before that plan ran into trademark issues with a cracker manufacturer. The marketing geniuses went back to the drawing board and gave us this. Perhaps "Zest Star" was an interim step.