whet sb's appetite

whet sb's appetite (for sth) (increase sb's interest in and desire for sth / to do sth) — разжечь интерес к чему-л.; пробудить интерес, желание; подогреть интерес; будоражить интерес, любопытство

This book will whet his appetite for travel.

Example 1: I've read an excerpt of the book she wrote and it's whetted my appetite (for more).

Example 2: That first lecture whetted my appetite for study.

Example 3: This book will whet his appetite for travel.

also
pique / trigger sb's curiosity
trigger the readers’ curiosity

Opp.
[отбить охоту]
[take the wind out of one's sails]