The more I think about it the less the premise makes sense.
Advanced enough to make alcohol that is drinkable enough to get drunk yet not advanced enough to use alcohol to cook with.
Advanced enough to make hard bread yet not advanced enough to make pasta.
Advanced enough to differentiate between fruit and vegetable yet not advanced enough to make a good salad.
They have salt, flour, eggs, meat, a variety of fruits and vegetables, milk, rice, alcohol, and who knows what else yet they can't make anything good with it and there is no reason given why.
The people are creative enough and dare to experiment with fabric, buildings, transportation, weapons, trading, money, real estate, etc but not food. One of the most basic human needs is portrayed as being so far behind that the mc can't handle it.
That's a huge plot hole that you should just ignore. I feel like the manga is banking too hard on not having to explain the reason of why their food apparently sucks.
Also stab the goddess right in the eye. Bringing someone from another world over saying it's necessary and then saying that they can do what they want. Then why was it necessary?
A vague idea of why it was necessary would make the plot a whole lot more stable. Hell I'd even take I saw you and found you interesting so I placed you on this world or I know what impact you will have on this world so do what you want.
Now she was put there with an excuse that has no meaning and they don't even mention it again. There are 7 chapters released now and the goddess hasn't risen above being a cheap ploy to start the story.
I'm disappointed in the mc too, a whole new world let's substitute every ingredient with the earth equivalent. Let's not look for new things to cook with that would be too hard, and the author can't use the recipe as a bonus page.
Frankly I'm more interested in the hard yeastless kneadless bread. I want that recipe, not another pudding recipe since that is in every isekai cooking story.
I say yeastless since she needs to make her own to use and kneadless since the maids who cook haven't done that before making the pasta looking at their expressions.