Château Tour de Mirambeau Bordeaux Blanc Réserve 2015, France (£10.95 Tanners)
A bit of a sulphur whiff to begin with, but this blows off to reveal a zesty, zippy young wine with the crunchy greengage edge of Sauvignon balanced against the deeper limier tones of Semillon. B+

Château Roquefort Roquefortissime Bordeaux Blanc 2014, France (£13.99 Waitrose)
Not shy to show off its smoky oak, but there’s enough herbal/ herbaceous greengage and (tinned) pear character to balance. Good but showing a little of that tinned vegetable character that Sauvignon can get with age. B+

(blended these two afterwards – the result was better than the sum of the parts…)