For Fruit story – Food is second house, the second bhava starts at Venus naksahtra, which is in 6th house, and Ketu is single planet in Venus nakshatra, hence it plays a deciding role. – Again guessing based on the Answer given as Sapota ( and the Jupiter influence on mars making it sweet possibly, as the second house lord being Mars, here Mars has less control being rasi lord, and nakshatra as more control on deciding factor for fruit , sweet is from jupiter aspect?