How specificly do these jars work as a sourdough starter jar?

The fact that the mouth of the jar is larger makes it easier to add the flour and water during the "feeding" process. It has two different lid options. When I store in the refrigerator for a week, I use the plastic lid. I have shared my starter with friends and put it in these jars and use the glass lid with the clips so it is more secure on the trip to their home (I also give the plastic lid for when they store in the refrigerator). I sent some to my daughter who is enjoying them for her sourdough starter.

How large is the opening and how tall is the jar?

The jars I purchased are 9cm for the opening and the height of the jar is 15cm.

Can the seal be removed from the lid to allow for gas to escape as the starter ferments?

Don’t use the clips and that will allow for gas to escape

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Description

🌿 Preserve Freshness, Flaunt Style — The Jar That Does It All!

SAFE FOR EVERY STEP - Microwave and dishwasher safe glass means effortless heating and cleaning without compromising durability.
ROBUST RELIABLE SEAL - Keep your sourdough starter and preserves fresh longer with airtight rubber gaskets and stainless steel clips.
VERSATILE MULTI PURPOSE - Perfect for canning, juices, pickles, dry goods, or even chic bathroom storage—one jar, endless possibilities.
SUSTAINABLE SOPHISTICATION - Ditch plastic for a reusable, eco-conscious choice that impresses guests and supports a greener lifestyle.
VINTAGE ELEGANCE MEETS MODERN UTILITY - Elevate your kitchen aesthetics with iconic tulip-shaped jars that double as stylish décor and functional storage.

The Weck Tulip Jars 1 Liter (2 Pack) are premium, thick glass containers designed for home canning and storage. Featuring a wide mouth for easy filling and cleaning, airtight wire clamp closures with rubber gaskets ensure superior freshness. These eco-friendly, microwave and dishwasher safe jars are perfect for sourdough starters, juices, pickled vegetables, and more, combining vintage charm with modern durability and versatility.

Specifications

Product Dimensions	3.88"L x 3.88"W x 5.75"H
Recommended Uses For Product	Canning, Dried pulses, Juice, Leftover food, Pickled vegetables, Sourdough starter
Special Feature	Air Tight
Container Shape	Tulip
Closure Type	Wire Clamp
Is Dishwasher Safe	Yes
Item Package Quantity	1
Item Weight	3.2 Pounds
Product Care Instructions	Microwave Safe
Item Volume	35.9 Fluid Ounces
Unit Count	1.0 Count
Is Microwaveable	Yes
Item Form	tulip
Manufacturer	Weck Jars
Number of Items	2
Size	Glass Lids and Keep Fresh Covers
Item Weight	3.15 pounds
Pattern	Jars, Glass Lids & Keep Fresh Covers
Shape	Novelty
Special Features	Air Tight
Batteries Included?	No
Batteries Required?	No
Number of Sets	1

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