Possible Clues:

• Cod 'n' chips requires a vegetable
• Is Chas about to pin some greens
• Turn on both taps, clutching a vegetable
• Greens an' chips, say
• Leaves wasp in a cheese sandwich
• Vegetable that's a bit crisp in a chutney
• V8 vegetable
• Persuasively present a church as source of strength, supposedly
• Ingredient in eggs Florentine
• Leaves pine that's been chopped on slant