Step #1 At home: Mix turkey well with beans, cornstarch, cilantro, egg, fish sauce, lemon grass, chilies (lesser amount for mildest flavor), onions, & sugar.
Step #2 Divide into 16 equal portions & shape into 16 patties, each 1/2 inch thick.
Step #3 Pour oil into a 10- to 12-inch nonstick frying pan over medium-high heat.
Step #4 When hot, add a few patties, without crowding.
Step #5 Cook until brown on each side & no longer pink in center (cut to test), about 7 mins total.
Step #6 Remove as cooked & drain on paper towels; add more patties to pan.
Step #7 When patties are cool, freeze in a single layer in a metal pan until hard, then seal airtight in plastic freezer bags.
Step #8 Transport in an insulated chest.
Step #9 In camp: Place frozen patties in a 9- to 10-inch nonstick frying pan over low heat/flame, cover, & cook this until warm, 3 to 5 mins; turn at least once.