I'm almost 50 and I've started trying one new food every month.
Previously I didn't "like" tomatoes. Now, I still won't eat them plain, but, I will use them in cooking and eat them in salads.
I have added some foods to my staples. Others, I've tried I didn't care for and won't eat ...
I bought a decent digital scale that measures in both kg and ounces.
I weigh out all my foods for accurate accounting.