Mostly-vegetarian sandwiches, salads, and potpies come in hefty flavorsome proportions at this favorite. The composition of the clientele is alluded to in the sign that reads HEY STUDENTS -- BRING OUR CUTLERY BACK, but families and older folk drop by in substantial numbers, too. They dawdle at tables with chairs that don't even bear a family resemblance amid panels of stamped tin on walls and ceilings and offhanded sculptures beholden to no school. Herbal teas, coffees, and 18 different kinds of milkshakes (almond, maple, and peach-apricot are among the choices) constitute the available nonalcoholic beverages. Occupying a timeworn redbrick house, the restaurant has several dining nooks, along with a tree- and fern-filled courtyard in summer. One percent of the bill is sent to organizations that ease hunger in Québec and developing nations. Takeout is available.