The Global Diet Quality project developed the Diet Quality Questionnaire (DQQ), a standardized, easy-to-use, 5-minute survey for collecting comparable food group consumption data. You can visit their website to access the DQQ and other tools to monitor trends and compare diet quality in and across countries and sectors. The project is collecting a suite of diet quality indicators that support monitoring across different population groups (age, gender, income, etc.), which will be available soon.