Plus Vinegar and Minus Vinegar

Nobita and Shizuka are rowing in the big pond in the park. When Nobita stands up, he stumbles and Shizuka's badge falls into the pond! Nobita uses a net to catch it for a long time, but still can't find it. After Nobita returns home, he is very disappointed to find that his mother's lunch rice has green peppers in it, which he hates the most. Nobita says he doesn't want to eat anything, so Doraemon takes out the "Plus Vinegar" and "Minus Vinegar". First, Doraemon pours the "Minus Vinegar" into the rice while saying "green peppers", and the green peppers disappear from the rice. Then, he pours the "Plus Vinegar" while saying "shrimp", and this time there are a lot of shrimps in the rice! After Nobita happily finishes his hand-pulled rice, he uses vinegar to finish his homework (although all the answers are the same wrong), and uses vinegar to complete the weeding work assigned by his mother (he once confused vinegar with vinegar, which makes the weeds more numerous). Then Nobita takes two bottles of vinegar to the pond, intending to find Shizuka's badge. On the way, Suneo deliberately lies to the two of them, causing them to be led to an empty lot to listen to Gian singing. Doraemon then uses vinegar to increase the number of cement pipes, so that Gian cannot find the two, and the two take the opportunity to escape. In order to punish Suneo, he uses vinegar to increase the number of Suneo's hair. When they arrive at the park, Shizuka is still sad about losing her brooch. At this time, no one is rowing in the pond, so Doraemon and Nobita use vinegar to reduce the water in the pond, so that they can enter the pond. Since the fish in the pond cannot survive without water, the two must find the brooch quickly. Nobita finds the brooch in the crack of the rock, but can't reach it, so the two use vinegar to increase their muscles, move the rock and take the brooch (later the two may have used vinegar to return to their original state, but according to the use of the previous gadget, using vinegar may also reduce the muscles that are already on the body, so other methods may have been used. In short, how the two return to their original state is omitted here). After returning to the shore, Shizuka is very happy and uses vinegar to help remove the mud on the two, but the turtle that bites Doraemon's tail in the pond cannot be removed. After returning home, it is dinner time, and my mother makes green pepper tenderloin again. Just when Nobita is about to use vinegar to increase the tenderloin, my mother mentions the word "green pepper", and the whole plate is full of green pepper. At this time, the vinegar has run out, so Nobita has to eat all the green peppers.