"Low food" warning incorrect? (Not sure if a bug)

[Jan2607]

Everyone knows the warning "Low food" at the beginning of a game.
This message shows you, how many food left and that it's not enough to survive.
But does it count correctly?

I observed how many potatoes a colonist takes from the hopper, to get one nutrient meal. Every colonist takes 5 potatoes to get one nutrient meal.

When the warning appeared, I had 136 potatoes (75 of them were in the hopper) and 7 strawberrys. The message said, I had only 19 nutrition worth of food in my storage.
136 potatoes, that are 27 nutrient meals.

Another example: I had more than 200 potatoes in storage and the message told me, I had only 23 nutrition worth of food.

So, is the system counting wrong? Or how does it count?

BTW: if a colonist takes 5 potatoes for one nutrient meal, how does the research effect this? 10% of 5 is not one potatoe, it's only a half. And the game don't uses numers like 0,5...

[Tynan]

It doesn't try to work out the optimal way to use your resources to make food, it just does a simple measurement of the food value of your stuff. So it's imperfect, yes, but it's designed that way. Thanks.