A Singaporean Mystery (3 Book Series)
From Book 1:

This delectable and witty mystery introduces Rosie “Aunty” Lee, feisty widow, amateur sleuth and proprietor of Singapore’s best-loved home cooking restaurant.

After losing her husband, Rosie Lee could easily have become one of Singapore’s “tai tai,” an idle rich lady devoted to an aimless life of mah-jongg and luxury shopping. Instead she threw herself into building a culinary empire from her restaurant, Aunty Lee’s Delights, where spicy Singaporean home cooking is graciously served by Rosie Lee herself to locals and tourists alike. But when a body is found in one of Singapore’s beautiful tourist havens, and when one of her wealthy guests fails to show at a dinner party, Aunty Lee knows that the two are likely connected.

The murder and disappearance throws together Aunty Lee’s henpecked stepson Mark, his social-climbing wife Selina, a gay couple whose love is still illegal in Singapore, and an elderly Australian tourist couple whose visit—billed at first as a pleasure cruise—may mask a deeper purpose. Investigating the murder is rookie Police Commissioner Raja, who quickly discovers that the savvy and well-connected Aunty Lee can track down clues even better than local law enforcement.

Wise, witty and unusually charming, Aunty Lee’s Delights is a spicy mystery about love, friendship and home cooking in Singapore, where money flows freely and people of many religions and ethnicities co-exist peacefully, but where tensions lurk just below the surface, sometimes with deadly results.