Possible Clues:

• Vegetable grown underground
• I dash off right before, to get something to eat
• Salad bar bit
• Edible red root
• Salad item, perhaps
• Pungent red salad root
• Salad without western salad ingredient
• Right to take a meal containing vegetable
• That's the ruddy root of something to eat at last
• Red enough for an Academician to have on a plate