Rule of thumb: 0.5 oz (about 15 g) per person for a tasting or canapés, and 1 oz (about 30 g) for a generous serving. That's consistent with the sellers' own guides:
- Regiis Ova: a 30 g tin "best serves 1–2".
- Costco (Plaza Osetra): a 2 oz jar serves 2–4.
- USA Black Caviar: a 100 g tin serves 6–8 as an appetizer, or 3–4 in larger portions.
Quick table
| Guests | Tasting (15 g each) | Generous (30 g each) | Cost at the lowest sturgeon price we track* |
|---|---|---|---|
| 2 | 30 g (1.1 oz) | 60 g (2.1 oz) | $28.98 to $57.96 |
| 4 | 60 g (2.1 oz) | 120 g (4.2 oz) | $57.96 to $115.92 |
| 6 | 90 g (3.2 oz) | 180 g (6.3 oz) | $86.94 to $173.88 |
| 8 | 120 g (4.2 oz) | 240 g (8.5 oz) | $115.92 to $231.84 |
| 10 | 150 g (5.3 oz) | 300 g (10.6 oz) | $144.90 to $289.80 |
| 12 | 180 g (6.3 oz) | 360 g (12.7 oz) | $173.88 to $347.76 |
*Based on GoStockUp's Black Caviar Osetra tin 500 g at $27.39/oz (checked 2026-10-14). You can only buy whole tins, so round up to the nearest tin size.
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FAQ
How much caviar per person?
Sellers' own serving guides work out to roughly 0.5–1 oz (15–30 g) per person. Regiis Ova says a 30 g tin serves 1–2. Costco's listing says a 2 oz jar serves 2–4. USA Black Caviar says a 100 g tin serves 6–8 as an appetizer or 3–4 in larger portions.
How much caviar for 10 people?
Using those guides, plan on about 125–250 g (4.4–8.8 oz) for 10 guests. For example, a widely reported 8.8 oz Costco tin is described as serving 7–12.
How long does caviar last once opened?
Sellers commonly say to eat it within 2–3 days of opening. Costco's Plaza listing says 24–48 hours, and Regiis Ova and OLMA say within 3 days.
Prices come from sellers' public pages and show the date we checked them. "Per oz" uses 28.35 g per oz. Prices change, so confirm at checkout. Disclosure.