Okay i only have fragmented memory of this one.
-Its about cooking
-The MC is a student.
-The MC's family is Dad (Who is a Office Worker), Mom (Who is not at home. Maybe deceased. I forgot), And younger sibling
-Then theres the MC friend who is a girl that loves his cooking.
-The MC learns cooking from his mom.
-There was a chapter about him cooking Tomato rice. By mixing tomato sauce to the rice water before cooking it.
-There was a chapter about the girl gaining weight cause of always eating the MC's food. It ended with the MC making a diet porridge for her i think.
-On that chapter she also saw how the MC's father has a great figure even though they eat the same food. And the younger sibling saying that the MC's evil making the girl feel like this

Oh man now I want know the title too