Have you ever been to a foodbank or understand how they work?
They are overly reliant upon donations and the range is heavily oriented to dried and tinned produce. In the years I spent doing the pro bono law clinic in the same building in Coventry where there was an operational foodbank the shelves are filled with rice and pasta, beans and soup, breakfast cereals and toilet rolls. Condiments, herbs and spices, sauces and dairy produce or crest fruit and veg were not in the storerooms.
You could make a pasta meal with a jar of sauce and some dried pasta or a tin of chilli con carne and some rice but don't be ambitious.
People use foodbanks because after all their monthly commitments (and no, I don't mean their Sky TV or their data plan and monthly payment for an iPhone, I mean rent, fuel bills, petrol to run a knackered car to get to work because there are no buses, etc.) they simply no longer have enough money to feed themselves let alone that they might have children. They certainly don't have enough money to consider buying olive oil and parmesan cheese let alone fake ketchup or in date cheap bread.
Being poor is genuinely fucking tough in 21st century Britain. I do not recommend it.