Fresh Yeast vs Instant Yeast: What's the Difference and How to Substitute

If you've ever paused mid-recipe, wondering how to swap fresh yeast for instant yeast or vice versa, you're definitely not alone. I've been there too, especially when I first started baking at home. I'd read something like "15g fresh yeast" and stare at the packet of dried granules in my pantry thinking... now what?

Both fresh yeast and instant yeast perform the same magic: they bring dough to life by feeding on sugars and releasing carbon dioxide. But they behave a little differently, have different shelf lives, and each brings its own advantages to the baking process.

In this post, I'll walk you through:

Whether you're following a cherished Italian recipe that calls for a cube of lievito fresco, or you're troubleshooting why your dough isn't rising as expected, I hope this guide gives you a bit more confidence and curiosity in your baking journey.

Why This Topic Is Close to My Heart

Fresh yeast has always felt a little special to me, not because it's better, but because it's much harder to find where I live. The only times I've managed to get my hands on it were through a specialty grocer that also operates as a butchery, and an online Italian store, both offering air-flown cubes with a short shelf life and a slightly higher price. That's why instant yeast has become my everyday go-to. It's practical, reliable, and always ready when inspiration strikes. But lievito fresco will always hold a special place in my heart.

In 2021, I celebrated Christmas in Italy for the very first time, meeting my then-boyfriend, now husband, and spending the holidays with his family. Like many travellers, we picked up a few souvenirs before heading home. Among them was a small cube of lievito fresco, something I was curious to try but hadn't used before. But just before our flight, everything changed. We tested positive for COVID-19 and had to quarantine for two more weeks.

Once we recovered, we wanted to show our gratitude to his family for taking such good care of us while we were ill, so we decided to make homemade pizza using that cube of lievito fresco we had originally bought as a souvenir. Of all the times I've baked, this one is truly for the books. There was something special about making everything by hand, in a place where food always finds a way to bring people together. What started as just pizza became a moment of comfort during an unexpected stay, proof that flour, water, and fresh yeast can do more than make dough rise.

That's why Lievito Fresco means so much to me. It's the name we gave this blog, a reminder that even when things don't go as planned, you can still make something meaningful and find a little joy in the process.

What Is Fresh Yeast?

Fresh yeast, also known as cake yeast or compressed yeast, is a soft, crumbly block of living yeast cells. Pale beige in colour, it carries a delicate, slightly sweet, bready aroma.

You'll often find it in traditional European baking, especially Italian recipes, where it's loved for:

Fresh yeast does require a bit more care. It should be dissolved in lukewarm liquid before use and stored in the refrigerator. Because it's highly perishable, it typically lasts only about two weeks, and sometimes less once opened.

What Is Instant Yeast?

Instant yeast is fresh yeast that has been dried into fine granules designed to activate quickly and efficiently in dough. Unlike fresh yeast, it doesn't require refrigeration and can be stored in your pantry for months before opening.

One of its biggest advantages is convenience. Instant yeast can be mixed directly into flour without needing to be dissolved or bloomed beforehand, making it especially useful for busy home bakers.

For me, instant yeast is that reliable friend in the kitchen, always ready when I am, whether it's for a lazy weekend focaccia or a quick weeknight pizza dough.

How to Substitute Fresh Yeast and Instant Yeast

Most traditional European recipes use fresh yeast, while many home bakers keep instant yeast in their pantry. Fortunately, converting between the two is simple.

If your recipe calls for fresh yeast and you only have instant yeast, divide the amount of fresh yeast by 3.

For example:

If your recipe calls for instant yeast and you'd like to use fresh yeast instead, multiply the amount of instant yeast by 3.

For example:

FAQs

Final Thoughts

Whether you're just starting out or rediscovering the joy of homemade bread, understanding the difference between fresh yeast and instant yeast gives you more flexibility and a bit more freedom in the kitchen.

Use what's available and what suits your baking style. For me, that's usually instant yeast. But every time I see a little cube of lievito fresco, I'm reminded of those days in Italy, when baking brought comfort, connection, and a little bit of magic to an otherwise uncertain time.

Happy baking! 🥖

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