Possible Clues:

• A food that keeps one alive and healthy
• Food
• Vitamin, e.g
• Helps one to grow almond and iodine in flat rate
• Nutter in preparing good food
• Nourishing substance Greek character originally identified in river
• Dietary vitamin or mineral
• Head torn about information that's necessary for survival
• Ruin tent travelling in water, for example
• Seed — not a bean from France — that’s primary source of sustenance