How to Start and Maintain a Sourdough Starter (Using Mason Jars) – A Blood Sugar-Friendly Guide

If you’ve ever dreamed of baking your own fresh bread at home, sourdough is the ultimate starting point. Unlike regular white bread, sourdough is naturally fermented, easier to digest, and has a lower glycemic index making it a smarter choice for anyone looking to keep their blood sugar stable. Plus, all you need to get started is flour, water, and a good fermentation jar.

That’s where the SEWANTA Wide Mouth Mason Jars 32 oz come in. These jars aren’t just great for canning and storage—they’re the perfect vessel for growing and maintaining your sourdough starter.

Why Sourdough is Blood Sugar-Friendly

• Natural fermentation: The wild yeast and bacteria break down starches, which can help lower post-meal blood sugar spikes.
• Prebiotics + probiotics: Fermentation supports gut health, which may aid in glucose regulation.
• Lower glycemic index: Compared to regular white bread, sourdough digests more slowly, helping you feel full longer.

What You’ll Need to Start Your Sourdough Starter

• 1 cup flour (whole wheat or rye works best for starting)
• ½ cup filtered water
• 1 SEWANTA Wide Mouth Mason Jar (32 oz is the perfect size)
• A spoon for stirring
• A breathable cover (cloth or paper towel with a rubber band)

Step 1: Mix Flour and Water

In your mason jar, combine 1 cup of flour and ½ cup of water. Stir until no dry flour remains. Cover loosely and leave at room temperature.

Step 2: Feed Daily

Every 24 hours, remove half of the mixture (called “discard”) and feed the remaining starter with another 1 cup flour + ½ cup water. Stir well. Mark the jar with a rubber band to track how much it rises.

Step 3: Watch It Grow

Within 5–7 days, your starter will double in size after each feeding. This is when it’s ready to bake with. The clear glass of the SEWANTA jars makes it easy to see bubbles and track fermentation progress.

Why Use Mason Jars for Sourdough?

• Wide mouth: Easy to stir and feed without making a mess.
• Glass design: Lets you monitor fermentation and growth.
• Dishwasher-safe: Cleaning between uses is simple.
• Perfect size: 32 oz holds enough starter for baking without overflowing.

Baking Your First Blood Sugar-Friendly Sourdough

Once your starter is ready, you can bake simple, high-protein sourdough loaves using whole-grain flour. Pair it with sugar-free jams, peanut butter, or Greek yogurt dips for a delicious and blood sugar–friendly breakfast.

Want something sweet but balanced? Try these 3-Ingredient Peanut Butter Cookies made with no refined sugar—you can enjoy them alongside your sourdough creations for a protein-packed treat.

Final Thoughts

Starting a sourdough journey isn’t just about baking bread—it’s about making healthier choices that support your energy, digestion, and blood sugar balance. And the right tools make all the difference.

If you’re ready to start, grab a set of SEWANTA Wide Mouth Mason Jars 32 oz (4 Pack) your sourdough starter (and your kitchen) will thank you.

Disclaimer: This Blog may contain affiliate links that helps me support me and my mission to take your first step to a healthier you. Thank you for supporting my blog