There is a version of healthy catering everyone has met: the tray that is still full at the end, next to the one that emptied in ten minutes. Nothing was wrong with the ingredients. It was cooked as a category rather than as food.
Most of it is technique, not virtue. Vegetables want heat and salt and something acidic at the end. Roast the cauliflower properly and it is the first thing gone; steam it and season it timidly and it is decoration. The difference is not the recipe, it is whether anyone cooked it like they wanted to eat it.
Fat is not the enemy of a healthy menu, it is the reason anyone finishes the plate. Olive oil, tahini, yoghurt, nuts, avocado — these are what make a bowl satisfying enough that nobody goes looking for something else an hour later. A menu that removes all of them is not healthier in practice, because in practice it does not get eaten.
Do not build the menu by subtraction. Vegan, gluten-free, dairy-free and low-carb should be dishes in their own right, not the ordinary dish with something taken out of it. Anyone who has been handed the same plate minus the thing that made it good knows the difference immediately.
Temperature does more damage than any ingredient. Food that was right in the kitchen and lukewarm on the table reads as bad food, and the guest blames the recipe. If there is a gap between delivery and service, that gap is the thing to solve first — chafing, a tighter window, or a menu chosen because it survives the wait.
Healthy is not a flavour. It is a set of constraints, and the cooking still has to be good inside them.
