I imagine that other vegetables would work here, in combination with the radishes or on their own. Carrot, turnip, celeriac…

1 bunch radishes, greens removed, radishes trimmed (about 8 oz)
1 clove garlic, minced
1 scallion, chopped, or 1/4 c chopped onion
1/2  fresh hot pepper, preferably Thai, seeded and minced; or 1/4 – 1/2 t crushed red pepper flakes
1 T fish sauce
1 1/2 T  lime juice
1 t sugar or agave
2 T finely chopped dry-roasted peanuts, for garnish
1/2 c chopped fresh cilantro, for garnish

1. Shred the radishes on a grater or finely chop. Transfer them to a large bowl and add the garlic, scallion, hot pepper, fish sauce, lime juice, and sugar; toss to combine.

2. Taste and adjust the seasoning; the mixture may need more fish sauce, lime juice, and/or sugar. Garnish with the peanuts and cilantro and serve.