preindulge
/ˌpriɪndʌldʒ/Definitions
1. verb
to eat or drink something before going on to indulge in more food or drink
“She preindulged in the appetizers before the main course arrived.”
2. noun
the act of eating or drinking something before going on to indulge in more food or drink
“The preindulge of snacks before dinner is a common habit.”