Using Vinegar in Lentil Soup?

[mj_toronto8]

I’m Greek and grew up eating my mom’s lentil soup (fakes) almost weekly, especially in the colder months. Her version is simple and comforting—lentils, onion, garlic, bay leaf, olive oil, and always a spoon of tomato paste for depth. No vinegar.

But lately I’ve seen so many Greek recipes that add red wine vinegar at the end, and I’m curious—do you use vinegar in your fakes?

I love the idea of brightness, but I’m worried it’ll make the soup too acidic, especially since we already use tomato paste. I’ve even seen some people add both tomato and vinegar, which surprised me.

Does the vinegar really balance the flavors, or does it overpower the lentils? Have you tried both versions?

I’d love to hear what’s traditional in your home, or any tricks to get that rich, rounded flavor without making the soup too sharp.

Thanks in advance!

 

[k_tsoukalas]

Great question—and I totally relate! I grew up with my mom’s fakes too, and her version didn’t include vinegar either. Just like yours: lentils, onion, garlic, bay leaf, a good drizzle of olive oil, and tomato paste for that savory depth. So comforting.

That said, I’ve tried versions with a splash of red wine vinegar at the end, and I have to admit—it does brighten the flavor if you use it sparingly. I usually add just a teaspoon or two right before serving. It lifts the earthiness of the lentils and balances the olive oil and tomato nicely. Too much, though, and it definitely veers toward sharp.

Some people also serve it with vinegar on the side so everyone can adjust to taste.

If you’re hesitant, try a small test bowl first. Or add a splash of lemon juice instead for a different kind of brightness.

Curious to hear others’ takes too!