Aromas of sharp onion and chives, sweet sesame and tangy ginger pervade a medium-sized cafeteria at Stone Canyon Outdoor EdVentures, an outdoor education center in Larkspur. About 30 students from middle and elementary schools from across Douglas County chop vegetables, crack eggs and beat dough at small tables. They read directions from a sheet of paper. The end product will be fried rice and pork dumplings.