From Pikipedia, the Pikmin wiki
The Disguised Delicacy (ミカケダマシ?, lit.: "Deceiving Appearance") is a treasure in Pikmin 2 and a fruit in Pikmin 3. It is a kiwifruit. In Pikmin 2, it is found at the start of the Dream Den, while in Pikmin 3, it can be recovered on the Distant Tundra and the Tropical Wilds.
Collecting the treasure
In Pikmin 2, the Disguised Delicacy can be found on the first floor of the Dream Den in the Wistful Wild. The sublevel contains multiple Dwarf Orange Bulborbs, Lesser Spotted Jellyfloats, a Hermit Crawmad, and gas pipes between this treasure and the ship.
Collecting the fruit
The one in the Tropical Wilds is being held by the Shaggy Long Legs. Defeat the creature to get the fruit. To find the Shaggy Long Legs, you must break the electric gate being guarded by an Orange Bulborb near the Dawn Pustules. The bulborb can be taken out with bomb rocks buried nearby.
“The fruit on this planet is astonishingly large. If we could cultivate these ample fruits on Hocotate, nobody would ever go hungry again! Sadly, I don't know anything about agriculture. Maybe I should have listened to my wife when she told me to do yard work...”
“Fruits cannot be judged by their outer coverings, no matter how hairy. This one is quite yummy. It is times like these that make me wish I were equipped with advanced taste capabilities.”
“Ha! This fuzzy produce thought it could disguise itself as one of the native creatures, but I'd know the smell of Piktamin U anywhere! Take that, fruit!”
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