The flavor of ramps is similar to onions, particularly like scallions, but wilder. They can be used just like scallions. In Appalachia, they are so popular that festivals are dedicated to them. They've been a staple of Southern Appalachian cooking for generations. Feel free to sub regular leeks or scallions if ramps are unavailable. The kimchi will be ready in about one week. you will know when the raw grassy smell dissipates and in its place comes the most mouth-watering aroma. Cooking time is fermentation time in the refrigerator. Ramps kimchi will last in the fridge for months.