When my daughter Simone was an infant and had just started to eat solid food, one of the things I always said when offering her food was, “so yummy, so yummy, so yummy in your tummy”. I did this every time I gave her solid food regardless of whether it was something new or familiar. Today she is not afraid to try new food items or recipes. She may not love it or like it but at least she is willing to have a few morsels. When she eats now, she has this little dance, where she is swinging and titling her head and says, ” so yummy, so yummy, so yummy in my tummy tummy tummy”. These words make her happy and I think this association is what makes her a good eater.
Try it and let me know how it works for you.