Food for thought is an expression that refers to IDEAS or information that can be used to think about and reflect on. It is often used to refer to philosophical or moral concepts. In this crossword, the solutions IDEAS, DATA, BRAINCELERY, and BRAINMUFFIN all relate to the term FOOD FOR THOUGHT. IDEAS is a five-letter word that refers to thoughts or opinions that are formed in the mind. DATA is a four-letter word that refers to facts or information that can be used to make decisions or draw conclusions. BRAINCELERY and BRAINMUFFIN are both eleven-letter words that are humorous references to food for thought. BRAINCELERY is a play on the phrase 'brain food' and BRAINMUFFIN is a play on the phrase 'brainstorming'.