Kitchen cabinets can acquire a subtle but gross layer of grime over the years. You can easily get rid of it with this simple DIY cleaning solution.
One Good Thing by Jillee suggests creating a mixture of one part vegetable oil and two parts bicarb soda. This should result in a thick paste that you can scrub deep into wooden cabinets with a toothbrush. While the accumulated grime in your kitchen might not be noticeable to the untrained eye, Jillee's before and after photos are impressive, so this is definitely worth trying if you haven't deep-cleaned your kitchen recently.
2-Ingredient Homemade Kitchen Cabinet Gunk Remover [One Good Thing by Jillee]