Eat the food he won't touch and exaggerate how good it tastes. If he doesn't want it after that, no sweat, otherwise it may become a power contest where he's as

Eat the food he won't touch and exaggerate how good it tastes. If he doesn't want it after that, no sweat, otherwise it may become a power contest where he's asserting his independence (as he should be). You can also try giving a choice between "this green thing" or "that green thing".