Related Clues:

• Bitter
• See 17-Down
• Phosphate, e.g.
• Compound with a doubly linked carbon atom
• Mordant
• Rock variety
• Alternative to mushrooms
• Kind of wit or test
• See 26-Down
• Stinging
• Milk of magnesia target
• Compound present in beer
• Poor soil ingredient
• Acetylacetone form
• Sarcastic