Trick o' the letters
I am a word of five letters and people eat me. If you remove the first letter, I become a form of energy. Remove the first two and I'm needed to live. Scramble the last three and you can drink me. What am I?
Answer: Wheat, heat, eat, tea
50 Easy Riddles (with Answers) Anyone Can Solve, Source:https://www.rd.com/list/easy-riddles/