Section 2
　The canned mackerel/had to meet the requirements/of JAXA.// There were two main difficulties/in making the canned mackerel.//
　The first difficulty was/to make a sticky sauce.// When astronauts eat,/liquid should not float around/in the space station.// After many attempts,/the students found a solution.// They added kudzu  starch/to the sauce.// It finally became sticky enough.//
　The second difficulty/was the taste.// In space,/astronauts’ sense of taste/may become dull.// So/space food needs to have a strong flavor.// The students tried to figure out/the best level of flavor/without actually going to space.// They made many samples/with different amounts/of soy sauce and sugar/to find the best balance.// Finally,/they agreed on a recipe.//