How do you fit 2 1L jars in an Instant Pot?

You cannot confirm it from published figures. No jar on this site’s pickling jar guide is sold as a 1 liter jar, and no maker on any of the cited guides publishes an Instant Pot interior diameter or depth, so a two jar fit is not something this site can state.

What the makers do publish is capacity in ounces and quarts, plus mouth width on some jars. Those figures let you judge whether a jar is the size you think it is, and whether two of them could sit side by side in a round pot. The rest is a tape measure job on your own appliance.

What size the compared jars actually are

The Best Pickling Jars for Small Batches and Bulk guide compares five jars, and every one of them is published in ounces, not liters. The ComSaf 32 oz Wide Mouth Mason Jars 2 Pack states 32 oz per jar, which the maker also describes as 1 quart. The Anwoi 32OZ Wide Mouth Glass Storage Jars, the SAJKUERO 32 oz Pickling Jars and the Muxryla 32 oz Pickling Jars all state 32 oz. The Miuyhji 16 oz Wide Mouth Glass Mason Jars states 16 oz.

So the closest thing to a 1 liter jar in this guide is a 32 oz quart jar, and a US quart is not a liter. If the jars you already own are labeled 1 liter, they are a size this site has not compared, and none of the figures below describe them. Treat the quart jars here as the nearest published equivalent and check the label on your own glass before planning anything.

Two of the picks publish a mouth width, which matters more than capacity when you are packing jars into a round pot. The ComSaf states a 3 in wide mouth. The Anwoi states a 3.74 in wide mouth, and the Muxryla also states 3.74 in. The SAJKUERO and Miuyhji publish no mouth figure in their bullets.

Why no Instant Pot dimension appears here

This site compares kitchen gear on the numbers makers publish, and the four cited guides cover moka pots, pasta pots, pickling jars and stackable pots. None of them is a pressure cooker guide, and no pick on any of them is an Instant Pot. That means there is no interior diameter, no interior depth and no usable basket dimension on the fact sheet to work from.

The pasta pot guide is the closest thing to a vessel with a published width. The Best Pasta Pots for Draining Without a Colander picks publish outside dimensions, not inside ones. The Cooler Concepts Stainless Steel Pasta Pot states 9.45 in wide and 10.63 in high, and its feature text describes it as 9 inches tall and 6.5 inches across. The Oster Sangerfield 5-Quart set states an assembled size of 11 in long by 8.5 in wide by 10.5 in high.

Those are exterior figures for pots, and an exterior width tells you nothing reliable about the clear space inside a different appliance. A maker’s published outside diameter includes handles, rims and lid overhang. Reading an Instant Pot fit off a pasta pot’s spec sheet would be a guess dressed up as a number, and this site does not do that.

What the stackable pot picks do publish

The Best Stackable Pots for Small Kitchens and RVs guide is about nesting cookware, and its picks publish capacities rather than interior widths. The Granitestone Gray Pots and Pans Set states a 5 quart, a 3 quart and a 1.5 quart pot with tempered glass lids, and the maker states that the pots nest together. The CAROTE 19pcs set lists a 1.5 qt saucepan, a 3 qt saucepan and a 4 qt sauté pan.

The GreenLife 10 Piece Stainless Steel Pots and Pans set lists a 1.58QT saucepan, a 2.32QT saucepan and a 3.17QT saucepan, plus 8 in and 11 in glass lids. The Redchef set lists a 2.5 quart saucepan and 8 in and 10 in frying pans. None of these figures describe the inside of a pressure cooker, and none of them describe a jar.

What the stackable guide does show is how cookware makers handle the same problem you have: fitting round objects into limited space. Detachable handles and nesting rims are the published answer there. For jars in a pot, the equivalent is a rack or trivet that keeps glass off the base, and that is a method question rather than a product specification.

The moka pot figures and why they do not help

The Best Moka Pots for Stovetop and Electric Brewing guide publishes footprint dimensions for its picks, and they show how much a published width can vary. The Bialetti Moka Express 3-Cup states 5.6 in wide, 4.0 in deep and 6.7 in high. The Easyworkz Diego states 5.9 in wide, 4.13 in deep and 8.46 in high. The Imusa Aluminum Stovetop 6-cup states 1.57 in wide, 2.36 in deep and 3.35 in high.

Those are the outside dimensions of tapered pots, and they are useful for shelf and cabinet planning. They are not useful for working out whether two quart jars fit inside a pressure cooker, because the shape and the wall thickness of the vessel are different. The WALDWERK Stainless Steel Moka Pot states 6.22 in wide, 7.4 in deep and 2.1 in high, which is a footprint for a pot lying in its own proportions, not a clear internal span.

None of these figures should be borrowed to answer a question about a different appliance. If you want a number for your Instant Pot, the number has to come from the appliance maker, and this site has not compared that appliance.

How to check the fit yourself

Measure the clear inside diameter of your cooker’s inner pot at the widest point, then measure the widest point of one jar, which is usually the shoulder or the lid band rather than the base. Two jars side by side need twice the jar’s widest figure plus a gap, and that sum has to be smaller than the inside diameter. This site is not publishing that sum for you, because the jar figures here are capacities and mouth widths, not body diameters.

Height is the second check. A jar standing on a trivet has to clear the underside of the lid, and a quart jar is tall. The ComSaf, Anwoi, SAJKUERO and Muxryla picks publish no height at all in their bullets, so even the jar side of the sum is incomplete for four of the five. Only the Miuyhji publishes no height either, so height is simply not on the sheet for this guide.

The practical route is to stand both jars in the empty inner pot before you fill anything, with the trivet in place, and put the lid on. If the lid seats without pressing on the glass, the fit is real. If it does not, the jars are too tall or too wide for that cooker, and no published figure on this site will change that.

What the jar makers say about heat and sealing

The ComSaf bullets state that the split-type lids and bands help create an airtight seal for daily storage and water bath canning, and they add a caution to use proper water bath steps and avoid sudden temperature changes. That caution is worth reading twice if you plan to put glass jars into a sealed, heated vessel. The maker does not publish a temperature rating for the jar in its bullets.

The Anwoi bullets state BPA free food safe glass and a hinged lid with a rubber gasket, and they note that a gray fog can appear in a long-term sealed state. The SAJKUERO bullets state a stainless steel hinged lid with a leak-proof gasket. The Muxryla bullets state a silicone gasket and a stainless steel hinged clamp lid. None of these four publishes a maximum temperature.

So the honest position is that this site has not compared these jars for pressure cooking, and the makers’ published bullets describe storage, canning and fermenting rather than a sealed pressure environment. If your plan involves heat and pressure together, the jar maker’s own instructions are the document to read, not a capacity figure.