The Brazilian guava (feijoa, pineapple guava) is edible raw. Its taste and aroma are reminiscent of pineapple. Organic feijoa can be eaten with the peel.
Peeled barley (raw?) tastes good when sprouted or cooked. Barley grains are rich in minerals and fiber and are a healthy alternative to wheat. Organic?
The truffle is one of the most expensive edible mushrooms. You can add it raw to dishes to add flavor or cook it with the food. Organic varieties are preferable