From many authorities it is taken that Aaima-e-Tahereen (the Holy Imams) used to praise honey which is a cure for many diseases.
According to a tradition, Imam Moosa Kazim (a.s.) used to have sweets before going to sleep. Sugar is advantageous besides curing sputum.
According to Abdul Ala, incidentally, he was at the house of Imam Sadiq (a.s.) when the food was being laid. There was chicken whose stomach was filled with dates and oil.
According to another reliable tradition from Imam Ja’far-e-Sadiq (a.s.), the yolk of hen’s egg is very delicious. One no longer requires or feels like having meat when one takes the yolk. It does not possess the disadvantages of meat.
When a person complained to Imam Reza (a.s.) of having few children, he (a.s.) asked him to eat egg with onion.
According to Hazrat Ali (a.s.), there is nothing better than vinegar to have bread with as it cures nausea and protects the heart.
Many traditions state that olive oil is good for eating as well as rubbing on the body. Many of the Prophets used to have bread with olive oil and olive is praised a lot as it expels bad air from the body.
According to Haroon ibne Nafaq, he was invited to Hazrat Moosa Kazim (a.s.)’s place one day. There was a lot of halwa on the dastarkhan (table). He was surprised and the Imam (a.s.) said that he and his friends and followers take a lot of sweet.
According to Hazrat Ali (a.s.), walnut seeds if eaten during summer, increase body heat and cure boils, pimples etc. but if eaten during winter, warm kidneys and fight cold. Many traditions say that walnut, if taken with cheese is highly advantageous. If taken alone, it is harmful.