Safety: Jellies, Jams or Preserves, Grape, Concord
mg oxalate
per serving
Serving: 1 tbsp (20 g)
Verdict: 🟢 Safe
Per 100g: 9 mg
Data: Harvard T.H. Chan SPH (2024)
Here's the takeaway: Jellies, Jams or Preserves, Grape, Concord earns a Safe rating (🟢) at 2 mg oxalate per serving. Being under 25 mg means it fits comfortably in everyday eating. Keep your usual habits — adequate fluids and calcium in meals — and Jellies, Jams or Preserves, Grape, Concord poses no special concern.
Putting Jellies, Jams or Preserves, Grape, Concord in context: it lands well below the category average of 8 mg. In the database, 94% of condiments (133 of 141) fall in the 🟢 Safe group (under 25 mg oxalate/serving). The typical condiments here averages 8 mg oxalate per serving, so Jellies, Jams or Preserves, Grape, Concord runs 74% below that baseline. That places it among the lower-oxalate options in its category. Why this matters: the gap between two Safe foods can be wide — one may hold 5 mg oxalate while another sits at 24 mg. The lower one leaves more room in your day. See all condiments rated Safe for a full side-by-side.
Why does the safe threshold matter?
The 25 mg per serving threshold is based on clinical guidance for kidney stone patients. Harvard's lab data (2024) provides the most reliable oxalate measurements available — no database estimates, direct lab analysis. Jellies, Jams or Preserves, Grape, Concord comes in at 2 mg oxalate per 1 tbsp (Safe) in the measured database.
Can I eat this food every day?
If it's in the Safe zone (under 25 mg/serving), yes — it can be a regular part of your diet. For Caution or Avoid foods, frequency matters. Rotate them with lower-oxalate options throughout the week. For Jellies, Jams or Preserves, Grape, Concord, the measured oxalate value is 2 mg per 1 tbsp (Safe).
Where does the oxalate data come from?
Every oxalate figure is sourced from Harvard T.H. Chan SPH (2024), distributed via the OHF database. The values come from actual lab measurements of the foods — not from database averages or estimates. Applied to Jellies, Jams or Preserves, Grape, Concord: 2 mg oxalate per 1 tbsp — Safe per Harvard (2024).
Should I also check sodium and calcium?
Yes — kidney stone risk isn't just about oxalate. High sodium increases urinary calcium (a stone promoter). Adequate dietary calcium (from food, not supplements) actually binds oxalate in your gut. Check the food's full nutrition page for the complete picture. Applied to Jellies, Jams or Preserves, Grape, Concord: 2 mg oxalate per 1 tbsp — Safe per Harvard (2024).