Fennel
10.0Shred for slaw, add anise seed for flavor
Cabbage juice (raw or fermented kvass-style) is a fringe health drink with pronounced sulfur notes from glucosinolates and pH around 6.2 fresh, dropping to 4.0 after lacto-fermentation. A cup gives ~5g fiber pulp if unstrained. A substitute in drink form must juice clean, carry similar earthy-green character, and ferment or balance with citrus cleanly. This page ranks substitutes by juice yield per pound, fermentation compatibility, and palatable mouthfeel in liquid.
Shred for slaw, add anise seed for flavor
Juice 1 pound fennel for 10-12 oz liquid. Fennel juice carries anise-licorice aromatics cleanly, ferments into a mild tonic over 48 hours with wild yeast. Mix 1:3 with water and lemon for digestive bitters. Unlike cabbage, fennel juice doesn't develop sulfur off-notes with time; holds 3 days refrigerated.
Shredded for peppery crunch in tacos and slaws
Juice 1 pound radishes for 8-10 oz sharp-peppery liquid. Radish juice is unusual in Western drinks but appears in Korean dongchimi (radish water kimchi) at pH 4.2 after 3-5 day ferment. Mix 1 part juice with 3 parts sparkling water and a pinch of salt for a cooling summer tonic.
Shred fine for slaw-style salads
Use 1 pound romaine for 12-14 oz juice. Lettuce juice (laitue-tisane traditionally) is mildly sedative from lactucarium compounds; yields clean pale-green liquid with minimal vegetable funk. Drink within 6 hours — oxidizes quickly. Combine with apple or cucumber juice 1:2 for palatable everyday green juice.
Shred for slaw, stays crunchy; peel before using
Juice 1 pound kohlrabi for 10 oz slightly sweet (~5 brix) liquid. Kohlrabi juice is cleaner than cabbage's sulfur register, making it more palatable straight. Ferments to a mild kvass-style drink over 72 hours with a salt starter. Pair with ginger and lime for vibrant spring tonics.
Cooks down more, add at end of cooking
Use 1 pound spinach for 10-12 oz deep-green juice. High chlorophyll and iron give metallic edge; balance with pineapple or apple juice 1:2 for drinkability. Doesn't ferment well (bitter compounds develop) — consume within 4 hours for best flavor. Good smoothie base when blended with banana for mouthfeel.
Diced onions add sweet depth when braised; won't provide cabbage's crunch, best in cooked dishes only
Rarely juiced directly — 1 pound yields 12 oz pungent liquid at sulfur concentrations too high for casual drinking. Use as tonic: 1 tbsp onion juice in 8 oz warm water with honey for folk-remedy cold drinks. Much stronger than cabbage kvass; dilute heavily or skip for beverage applications.