Related Clues:

• Like sourballs
• Like crab apples
• Like citrus juices
• Very harsh
• Causing the lips to pucker
• Like unripe apples
• Sharp to the taste
• Jam-filled pastry
• Zesty
• Sharp in manner, biting
• The pastry sounds bitter
• Of taste, sharp or acid
• Sarcastic or sour
• Sour like open cake
• Sharp tasting- like kind of pie?