Cut the green papaya into thin matchsticks. If it releases a lot of sap, rinse briefly under cold water and drain well. There is no need to soak it.
Cut the carrot into thin matchsticks. Cut the bell pepper into thin strips and thinly slice the onion.
Place all the vegetables in a large bowl. Add the peppercorns and crushed red pepper, then toss together.
Combine the vinegar, water, sugar, salt, garlic, and ginger in a pot. Bring to a boil, stirring until the sugar and salt dissolve. Let it cool slightly, then taste and adjust as needed.
Pack the vegetables tightly into clean glass jars. Slowly pour in the hot brine until they are completely covered. Let the achara cool before covering the jars.
Refrigerate for at least 1 day before serving. Keep refrigerated and use within 1 month.
Video
Notes
Green papaya: Choose one that is firm and green, with no soft or yellow spots. Add other vegetables, such as cucumber, green beans, or red onion, if you like.
Vinegar: Use distilled white vinegar with 5% acidity. For a milder flavor, use cane vinegar.
Sugar: Achara is usually sweeter than other quick pickles. Adjust the sugar to taste. You can also add raisins for extra sweetness.
Glass jars: Use clean jars with tight-fitting lids. To keep the glass from cracking, combine the vegetables and hot brine in a heatproof bowl. Let it cool, then transfer it to the jars.