Vermicular Oven Pot Sizing Guide: Which Size to Buy

Match Size to Household, Not Ambition

Vermicular’s official US guidance ties each size directly to a serving count, which removes most of the guesswork: 14cm serves 1, 18cm serves 1-2, 22cm serves 2-4, and 26cm serves 4-6. The temptation with a first cast iron Dutch oven purchase is to size up “just in case” — but a 26cm pot at $400 is a meaningfully bigger investment than a 22cm at $340, and the extra capacity goes unused for most single-recipe cooking if your household is smaller.

The Default: 22cm

The 22cm size is the one Vermicular’s own materials describe as “all-purpose everyday cooking,” and it’s the size most frequently referenced across this site’s other Vermicular coverage. For a household of 2-4 that wants one Oven Pot for general braising, soups, and stews, this is the size to start with.

When 26cm Is Worth It

The 26cm isn’t just a bigger version of the same use case — Vermicular’s manufacturer guidance specifically calls out whole-chicken roasting and bread baking as reasons to size up, in addition to cooking for more people. If either of those is a regular use case, the 26cm’s extra capacity has a specific job to do, not just a bigger number on the spec sheet.

14cm and 18cm: Smaller Than Most First-Time Buyers Expect

The 14cm is sized for single servings — desserts and side dishes as much as entrees, per manufacturer guidance. The 18cm steps up to 1-2 servings. Neither is a practical primary Dutch oven for a multi-person household, but either works well as a second pot for smaller-batch cooking alongside a 22cm or 26cm.

What Japan Has That the US Catalog Doesn’t

Japan’s Oven Pot 2 lineup splits into shallow and deep variants at each size (18cm, 22cm, 26cm) and adds a dedicated Soup Pot not rated for oven use. The current US Oven Pot 2.0 catalog, as listed on vermicular.us, includes only the four deep-profile sizes — no shallow variant, no Soup Pot.

If a wide, shallow cooking surface is specifically what you’re after — for sukiyaki-style hot pot meals, paella, or wide one-pot casseroles — that shape does exist in the US catalog, just under a different product: the original Oven Pot’s “26cm Shallow.” Japan sells the same shape under the original Oven Pot line as the “26cm SUKIYAKI,” named directly after the dish. The US listing uses the shape-based name and lists sukiyaki as one of several suggested uses rather than the headline one. Search for “26cm Shallow,” not “sukiyaki pot,” when shopping US listings.

Bottom Line

Start with the 22cm unless you have a specific reason not to. Size up to 26cm for whole-chicken roasts, bread baking, or a household of 4 or more. Size down to 14cm or 18cm only as a second pot for single servings, not as a primary Dutch oven. And if a wide, shallow shape is what you actually want, look at the original Oven Pot’s 26cm Shallow rather than the Oven Pot 2.0 line.