Gastronomical Archive Mother uses her black cookbook with a broken spine as a portable file for historical treasure. Here cioppino recipes cohabitate with obituaries, expired coupons and cards for religious novenas. When I die, she says, I give my jewelry all to your sister. But for you, I have saved the very best. Between Betty Crocker's scorned printed pages, my inheritance nestles, yellowed instructions written with a leaky pen, on Sunday offering envelopes. Secrets reside inside this bulging cover bound with rubber bands, a hidden, tantalizing feast of delectable pleasures.    c2000 by Jennifer Lagier