 If you liked
Zashiki Musume to Ryourinin
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 ...then you might like
Aikagi-kun to Shiawase Gohan
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There is a similar vibe of an older person taking care of an unrelated younger person with food in both these stories. Aikagi-kun feels like it's more headed toward a gentle romance, while Zashiki Musume feels like a coming of age story, but both are still publishing so I could be wrong.