MATTERS OF TASTE

Food Unwrapped, 8.30pm, 8 Ch4

WHILE Matt Tebbutt Te takes a thoroughly well-deserved trip to China to learn more about pearls — even helping to cultivate them from a creature that’s definitely not an oyster — Kate Quilton makes a surprising connection between butterflies (pictured) and packaged sliced ham after noticing a strange rainbow pattern on the still-fresh meat . . .