It's not even good quality food.
Step 1: give NHS hospitals enough money to provide decent food
Step 2: hire a nutritionist
Step 3: hire a dietician
Step 4: follow their instructions
The Tories committed to improving hospital food 4 years ago.
Doesn't look like they've made much progress.
The problem as has been said is that you'd need a huge team of people to do the meals...
They already hire people to work out portion sizes, what should go in them etc and offer a range of options.
The problem is your average hospital might need 500-1000 meals three times a day, every day for people ranging from toddlers, to the infirm, and with religious and personal tastes that vary massively.
And they're trying to get those meals to patients at roughly the same times every day across the hospital so that the other departments can continue to run on time and do things like tests, operations and medicines at the right times, unless you put a proper kitchen basically next to each ward and fully staff it with the dietician doing an assessment for everyone on their ward a couple of times a day it's not going to be easy.
My father was in for two weeks and whilst the food wasn't to his taste*, they really did try with multiple options every meal time and the patients could have multiple things, for example for one meal he had soup with rolls and sandwiches, as well as a yogurt or a trifle etc.
And to give an idea of what they have to try to cater for, on the bay of 6 beds he was in for the first week there was a bolshy ex prisoner (with hospital security for at least one day) for whom nothing was right, a guy who couldn't take solids (liquid diet), an older indian gent who struggled with more solid food, a guy who couldn't eat certain things (restricted diet), a massive guy seemed to really enjoy his food, and a Sikh
*He's a Geordie war baby, lifelong smoker with false teeth. He wasn't introduced to flavour until his teens and wasn't too fond of it
, now after 60+ years of smoking his taste buds are shot and with his false teeth he doesn't like things he has to chew too much or are crunchy (did I mention he doesn't like using Fixodent?
), he's a nightmare to feed at home
(his idea of a treat for a meal is a proper spam fitter, but it must be piping hot, fortunately we've got a good chippy about 4 minutes away and a cool box that has a "warm function").