Mr Z

AI Prompt for Takeaway on a Diet: By an 18-Year Coach

Francesco Zen, founder of ZTraining · Published 9 July 2026 · Updated 9 July 2026

The prompt

Copy-paste prompt, built from 18 years of coachingAct as my coach for ordering takeaway while I am tracking my nutrition. Before answering, ask me for: what is left of my calories and macros for today, the cuisine or specific restaurant if I know it, and whether I am ordering for one or splitting with others. Once you have that: 1. Work from what I have left today. If protein is short, steer me toward the highest-protein items on that specific menu, not a generic suggestion to add chicken. 2. Give me an actual order, dish names or categories, not vague advice like choose something grilled. 3. Flag the highest-calorie traps specific to that cuisine, the ones that quietly cost the most for the least fullness, rice portions, creamy sauces, fried starters, sugary drinks, and tell me what to reduce or skip. 4. If I am splitting the order with others, help me figure out a fair portion that still fits my numbers without making it awkward. 5. Give me one substitution I can actually request, extra vegetables instead of rice, sauce on the side, grilled instead of fried, that meaningfully improves the numbers without changing the meal I actually want. 6. Do not tell me to just cook at home instead. I am ordering takeaway, help me do that well. Ask me the setup questions now, before giving me an order.

Why this prompt works

Generic diet advice treats takeaway as something to be avoided rather than managed, which is exactly why so many people either white-knuckle past it or abandon the plan the moment they order it. This prompt assumes takeaway is staying in the picture and does the actual coaching work: which items on this specific menu get you closest to your numbers, and what to change about the order you were going to make anyway.

Cuisine-specific traps matter more than generic ones. The costly item in Thai food is different from the costly item in pizza, and advice that does not know the difference is not specific enough to actually change what gets ordered.

A real-world example

Take someone ordering Indian food with 500 calories and 35g of protein left for the day. The right output points toward a tandoori or grilled protein dish over a creamy curry, flags naan and rice portions as the real cost centre, and suggests a specific swap, extra protein, smaller rice portion, rather than a vague instruction to eat lighter.

The goal is an order that still feels like takeaway night, not a diet compromise dressed up as one.

Where a single prompt hits its ceiling

Menu descriptions rarely state exact calories or portion sizes, so this is always an estimate, sometimes a rough one, built from how that dish is typically prepared rather than a measured fact.

It also has no memory of what you ordered last takeaway night or the one before, so it cannot notice a pattern, like the same high-calorie order repeating weekly despite good intentions each time, unless you point it out yourself.

Common questions

Can you eat takeaway and still lose fat?

Yes, if the order is chosen against your actual remaining calories and macros for the day rather than avoided entirely or ordered without thought. Specific swaps on high-cost items usually matter more than the cuisine itself.

What takeaway food is best for a diet?

Whatever cuisine you actually enjoy, chosen carefully, tends to work better long-term than forcing yourself toward foods you do not want. Within any cuisine, grilled or tandoori-style proteins and lighter sauces are usually the better-fitting choices.

How do I make takeaway healthier without changing what I order?

Small, specific swaps: sauce on the side, a smaller portion of rice or naan, grilled instead of fried where the menu allows it. These changes keep the meal recognisable while meaningfully improving the numbers.

Francesco Zen is the founder of ZTraining and ZLIFE, with 18 years of coaching experience working with executives across the UK, US, and UAE. He built Mr Z, an AI coach trained on his methodology to bring the same approach to a wider audience.