If you've ever logged dal makhani, you trusted a number someone typed years ago. Maybe they weighed a restaurant portion in another country. Maybe they copied it from another app. Maybe they guessed. The number then spread from database to database, losing its history at every hop — until it landed in your tracker looking exactly as confident as a lab result.
That's the quiet problem with food tracking: the numbers all look equally true. A gram of lab-tested paneer and a gram of somebody's guess wear the same font.
What we did
We bought dal makhani from six Bengaluru kitchens — two homes, two small restaurants, two cloud kitchens — homogenized each batch, and sent samples to an NABL-accredited lab for a full macro panel. Then we compared the lab results against the 14 most-copied database entries for the dish.
What we found
Per 100 g, the lab average came out at 142 kcal. Here's how the popular entries compared:
| Source | kcal / 100 g | vs. lab |
|---|---|---|
| Lab panel (avg of 6 kitchens) | 142 | baseline |
| Best database entry | 151 | +6% |
| Median database entry | 118 | −17% |
| Worst database entry | 76 | −46% |
Read that last row again. If you're cutting on 1,800 kcal and dinner is two katoris of dal makhani, that one entry hides about 190 kcal a day. Over a 12-week cut, that's the difference between a result and a plateau you blame on yourself.
A marked estimate beats a confident lie. The danger isn't the guess — it's the guess dressed up as a fact.
Why entries drift
- Recipes vary wildly. Home dal and restaurant dal are different foods — butter and cream do a lot of quiet work.
- Copies lose context. "Per serving" becomes "per 100 g" somewhere along the chain, and nobody notices.
- Nobody signs their work. Once a number is separated from its source, there's no way to question it.
What we do differently
Every entry on the Mentzer record carries its source: lab certificate, brand label, USDA reference, or community — and estimates are tagged est right on the number. When you tap a food, you see where its numbers came from. When we don't know, the app says so.
Dal makhani now carries our lab panel, split into home-style and restaurant-style entries, because they genuinely are different dishes. Log the one you actually ate.
Foods you want us to send to the lab next? Tell us: hello@mentzer.app.