To maximise senior citizen discounts at grocery stores, consider including essential items such as fresh fruits, vegetables, whole grains, and proteins like meat or fish. Many stores offer discounts on certain days or provide loyalty cards for seniors, so it's a good idea to check your local store's policies. Additionally, look for items that often go on sale, like canned goods or household essentials. Remember to ask staff about any available senior discounts on your purchase, as they can vary by location. For the most accurate information, visiting your preferred store's website or contacting them directly can be very helpful.