Mix salt and 3 cups water in a one-quart glass jar until salt dissolves.
Squeeze lime or lemon juice, and add to the brine solution. Set aside.
Peel the carrot and cut in strips or desired shapes. Peel the chocho, cut in half lengthwise, remove the pit and discard, and cut into slices.
Place the carrot, chocho, onion, pepper, and pimento in the glass jar, leaving an inch of space at the top.
Pour brine over the vegetables, making sure to cover all the vegetables.
Cover the jar using a tight-fitting lid.
Leave the jar on the counter away from direct sunlight for about 3-7 days. The room temperature should be 60-70 degrees Fahrenheit. Open lid to release pressure daily, and taste vegetables to ensure they taste good.
Transfer to refrigerator to store for up to 1 month. The fermenting will continue at a slower pace.