Sauces, condiments and side vegetables go missing because they feel like part of the plate rather than separate foods, and because they are the first things to blur once a meal is over. A quick fix is to finish each meal entry with one add-on question: “Was anything added to, or served beside, the main food?” Then answer in a few words: “gravy”, “mayonnaise in the sandwich”, “side of broccoli”, “none”.
This guide is about making the record more complete and easier to compare. It does not say that any sauce, condiment or vegetable causes symptoms, and a diary cannot show that on its own.
Why add-ons are easy to forget
Add-ons are small, they arrive with something else, and they often feel too minor to count. A squeeze of ketchup, a spoonful of dressing or a few green beans on the side rarely feel like “a meal”. By the time you write the entry, the main dish is what you remember.
Research on dietary records points the same way, with caveats. In an Australian study of 133 young adults aged 18 to 30, published in Nutrients in 2021, participants wore cameras for three days, logged meals in a smartphone app and completed dietitian-led 24-hour recalls. The camera images were used as the reference. Savoury sauces and condiments were left out of the app record significantly more often than from the recall, and condiments were the most frequently omitted item in the app. The study also reported that vegetables were among the most often omitted components in both methods. It does not separate side vegetables from other vegetables, and it does not examine dressings.
The study was designed for nutrition research, not digestive symptoms, and the people in it were young, comfortable with technology and mostly of higher socioeconomic status. The recall was led by a dietitian, while the app was self-completed, which may account for part of the difference. So it does not show how many add-ons any one reader will miss. It does show that sauces and condiments are a known weak spot, and that being prompted can help.
What a prompt can do
Researchers who collect 24-hour recalls often use a staged approach called the multiple-pass method. The MRC Epidemiology Unit’s measurement toolkit describes it as a staged approach thought to suit human memory better than going through the day in order. One stage is a probe for foods forgotten during the first quick list. The toolkit lists cooking ingredients, snacks between meals and dietary supplements among the commonly forgotten items. The US National Cancer Institute’s ASA24 online recall tool, which is modelled on the US Department of Agriculture’s multiple-pass method, includes a pass that asks about commonly forgotten foods and drinks.
Those prompts are designed for research recalls, not for personal diaries, and the sources reviewed do not test a prompt like “was anything added?” in a symptom diary. The transferable idea is modest: a short, fixed question after the main entry gives memory a second chance to retrieve small items. Your own end-of-meal prompt can borrow that idea without becoming an interview.
A one-question add-on prompt
After you write the main description of a meal, ask yourself the same question each time:
Was anything added to the food, or served beside it?
Then give a short answer for whichever of these applies:
- On top or mixed in: sauce, gravy, dressing, mayonnaise, butter, oil, cheese, seeds.
- At the side: a side salad, a portion of vegetables, bread, chips or rice.
- At the table: ketchup, mustard, relish, chilli sauce, salt.
- From someone else’s kitchen: “house sauce, ingredients unknown”.
An entry might then read: “12:40 — jacket potato with beans and cheese; side salad with dressing (shop-bought); ketchup on the side.” That is an illustration of the format, not a claim about any ingredient.
If nothing was added, write “plain” or “no extras”. A written “none” is more useful than a blank, because a blank could mean no add-ons or no memory.
Keep it light: name, don’t measure
You do not need to weigh a teaspoon of sauce. A rough label is enough to tell two meals apart:
- “a little”, “a spoonful”, “a lot”, or “my usual”;
- “side of vegetables, about a third of the plate”;
- “whole pot of dip”.
Where you know it, a brand or type helps more than a quantity: “Caesar dressing” says more than “some dressing”. Where you do not know what is in it, say so, as you would for any mixed meal: “curry house sauce, ingredients unknown”. Unknown is accurate, and it stops a later comparison looking more certain than it was.
Side vegetables: the same size as the plate
Side vegetables are easy to drop for a different reason. They are often eaten second, in pieces, or left partly uneaten. Rather than recording a portion in grams, note what was served and what you ate: “broccoli and carrots, ate most of them” or “side salad, left half”. The same applies to bread on the table, chips shared across the plate and garnishes. The guide to leftovers, seconds and shared plates covers the portion side of this in more detail.
What this does not tell you
A fuller record does not show that an add-on matters. Most meals contain many components, and a sauce that appears on days with symptoms may simply appear on days when you eat out, eat later or are busier. The point of capturing add-ons is to avoid a hole in the record that you later fill with a guess. The guide to telling which meal caused bloating explains why a candidate association needs repeated, comparable entries before it is more than an observation.
Be wary of two traps. One is writing add-ons only when you suspect them, which makes them look important. The other is deciding to cut out a sauce, condiment or vegetable because it appeared in your notes. The British Dietetic Association’s guidance on irritable bowel syndrome and diet suggests keeping a food and symptom diary while making changes, and advises seeking specialist advice if you are struggling or your dietary intake becomes limited. That page is written for people with IBS, which you may not have, and it was last reviewed in January 2025. If you are thinking of restricting foods, a doctor or dietitian can help you do it without risking your nutrition.
If symptoms are persistent, getting worse or worrying you, speak to a pharmacist, GP or NHS 111. A diary does not replace care.
Fitting it into the day
Writing the add-on answer at the time you eat is easier than at night. If you do fill in entries afterwards, mark them as added later; the guide to recording at the time or afterwards explains how. For drinks and snacks, which go missing for similar reasons, see the guides to water and other drinks and snacks and grazing. If you would like a lower-effort way to capture the small details as well as the main meal, you can get GutBloom on Google Play.
Sources
- Nutrients (2021) — Using Wearable Cameras to Assess Foods and Beverages Omitted in 24 Hour Dietary Recalls and a Text Entry Food Record App
- MRC Epidemiology Unit, DAPA Measurement Toolkit — 24-hour dietary recalls
- Journal of the Academy of Nutrition and Dietetics (2012) — The Automated Self-Administered 24-Hour Dietary Recall (ASA24): A Resource for Researchers, Clinicians and Educators from the National Cancer Institute
- British Dietetic Association — Irritable bowel syndrome and diet