Café Laufer   Well-heeled ladies like to take tea here, and university students dig the sandwiches and good coffee. But it's the Euro-style desserts that keep people coming back, to eat in or take home. On a given day you might have a choice of tiramisu, the flourless (and famous) chocolate decadence, bread pudding, double-chocolate fudge cake, peach torte and a chestnut Mont Blanc cake.  3565 Waialae Ave. 735-7717. 10 a.m.-9 p.m. Sundays-Mondays, Wednesdays-Thursdays, 10 a.m.-10 p.m. Fridays-Saturdays. AX, DC, DS, JCB, MC, VS. No checks. Entrees: $$. Desserts: $.  Web site: www.cafelaufer.com