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🟢 sea cucumber VS 🔴 Sorrel

One of these is an easy choice for kidney stone patients. Sorrel clocks in at just 405 mg of oxalate per serving — while sea cucumber sits at 1 mg (405x higher). The Harvard (2024) lab data leaves no ambiguity here.

✓ Medically Reviewed Content reviewed by OxalateWatch editorial team. Based on Harvard T.H. Chan SPH oxalate data (2024) and NKF/AUA dietary guidelines.

⚖️ Head-to-Head Comparison

🟢
sea cucumber
Safe — Low Oxalate
1 mg oxalate / serving
Serving: (7 g)
Per 100 g: 0 mg oxalate
Sodium: — | Calcium: — | Protein: —
🔴
Sorrel
Avoid — Very High Oxalate
405 mg oxalate / serving
Serving: 1 cup, chopped (52 g)
Per 100 g: 779 mg oxalate
Sodium: — | Calcium: — | Protein: —

🏆 The Verdict: Choose sea cucumber

At 1 mg oxalate per serving (rated Safe), sea cucumber is the clear winner over Sorrel (405 mg, Avoid). The 405x difference comes from Harvard's 2024 lab measurements — this isn't an estimate or guess. Build your meals around sea cucumber and use Sorrel sparingly, if at all.

🔍 Key Takeaways

**Oxalate gap:** 405 mg vs 1 mg per serving — a 405x difference. One of these is significantly easier to fit into a kidney stone diet.
**Verdicts:** Sorrel is rated **Avoid (100+ mg/serving)**; sea cucumber is rated **Safe (under 25 mg/serving)**.
**Serving strategy:** If you choose Sorrel, consider a half portion or pair it with a calcium source. sea cucumber can be eaten more freely.
**Cooking tip:** For either vegetable, boiling and discarding the cooking water can reduce soluble oxalate by 30-50%. Steaming or eating raw preserves more oxalate.

❓ Frequently Asked Questions

Which is better for kidney stones — Sorrel or sea cucumber?

The numbers leave no doubt: sea cucumber (1 mg oxalate/serving, Safe) beats Sorrel (405 mg, Avoid) by a factor of 405x. For kidney stone patients, sea cucumber is the pick. Sorrel is a food to approach with portion awareness.

Can I eat Sorrel and sea cucumber together?

It's doable, but portion size matters a lot. Together they'd run about 406 mg oxalate. Use sea cucumber as your base and treat Sorrel as a garnish or small side — that keeps the total oxalate manageable.

How should I prepare Sorrel vs sea cucumber differently?

For Sorrel, boiling and draining cuts oxalate by 30-50%. Steaming preserves more. For sea cucumber, preparation method matters less — it's already low-oxalate. If you're cooking both, boil Sorrel separately and discard the water.

What are good substitutes if I want to avoid Sorrel?

Your best bet: sea cucumber. It's in the same category and has dramatically less oxalate. Check the Related Foods section on Sorrel's page for more specific alternatives verified by Harvard's 2024 data.

Browse all Vegetables 🟢 Low Oxalate Foods sea cucumber page Sorrel page
This is dietary reference information, NOT medical advice. Talk to your doctor or a registered dietitian before changing your diet. Oxalate tolerance varies by person, stone type, and medication.