Possible Clues:

• What's grown from fuss surrounding unfinished oral
• Mexican fruit tree from the Aztec ahuacatl
• Dull greenish colour
• Dark yellow-green
• A part of an unfinished song by engineer - the green type that's stoned
• Send back cold eggs, a cook producing salad ingredient
• Fruit and eggs flipped over: oik's captured
• The alligator pear
• Toast topper, at times
• Fruit business led by a very old chap at first