Well, food became business now so people who does that business try to keep the prices up even if the food js going to waste. Because their primary goal is profits not feeding the people and our government allows it by creating policies that benefit the big corporations which keeps the supply under their control. A government should focus on sustainability and fair distribution but what they do is mass production ane monopolizes the resources.
One thing I no about food prices is that it can never be the same because each companies that are into food business has difference supplier, so is from how they will buy from those suppliers will they no the amount they would fixed their food they are cooking, secondly food is not just buying one thing and is done, it actually has different things that would make it to have the taste people will like and those things might have also increase from were they usually get them, this is just like how we normally buy pizza 4k in my currency but because of the cost of the items that would be use on it, they have increase it to 10k and 12k in my country on the medium size.