The Masa Float Test for Tamales

The masa float test is the quickest way to know if your tamale dough is ready. Drop a small piece into a cup of water, if it floats right back up, you’re good to go. If it sinks, I’ve got the fixes that actually work below.

The masa float test is one of those small steps that makes a big difference. It only takes a few seconds, but it tells you exactly what you need to know: is your masa light enough to spread, or does it need a bit more work first? Skip it, and you’re guessing. Do it, and you know for sure your tamales will come out the way they’re supposed to.

I remember the first time I made tamales completely on my own, without my mom or my older sister standing next to me to check my work. That float test was what gave me the confidence to keep going. Every time that little piece of masa popped back up to the top, I knew I was on the right track, and that my tamales were going to come out light and airy instead of dense and heavy.

It’s a small habit, but it’s one I still do every single time I make tamales, no matter how many years of practice I have behind me now.

What is The Masa Float Test

Once your corn husks are soaking and your filling is ready, it’s time to mix the masa. I have my masa without lard recipe here on the blog, or if you want tamales masa made with oil, butter, or coconut oil, those versions are in my tamales cookbook.

The float test comes right after you finish mixing, before you start spreading masa onto the husks. It’s your last check before assembly.

Why Does Masa Need to Float

Masa that passes the float test has enough air whipped into it. That air is what makes the difference between light, tender tamales and ones that turn out dense and heavy after steaming.

How to Know When Masa is Ready For Tamales

The traditional way to mix masa is entirely by hand, no mixer, just muscle and patience. It takes real effort, especially for a big batch.

Cooks who’ve been making tamales for years often skip the float test altogether, they can tell the masa is ready just by how it looks and moves under the spoon. That kind of instinct comes from decades of practice.

The float test is how the rest of us get that same confidence.

These days most people use a handheld or stand mixer instead, either works fine, a stand mixer just gets you there faster.

You’ll know the masa is ready when everything is well incorporated. The masa should feel hydrated, not gritty, light, airy, and creamy, and it should spread easily. Run a spoon or spatula through the top, it should move the way frosting does.

You can see this texture in my masa making video, watch here.

How to Test Masa for Tamales

Grab a small dollop of masa, about a teaspoon, and drop it into a cup of warm water. Warm water works best here, it mimics the temperature the masa will hit once it’s steaming, so you get a truer read on how it’ll behave.

If the masa is ready, it floats back to the top within a second or two.

If it sinks, it just needs a bit more work. Here are a few things that actually fix it.

What do You do if Your Tamale Dough Doesn’t Float?

Before you even start mixing, test your baking powder. Old baking powder won’t give the masa the lift it needs, and no amount of whipping will fix that after the fact. Drop about ¼ teaspoon into a small cup of water. If it’s active, it bubbles right away. If nothing happens, it’s dead, toss it and grab a fresh can.

If your baking powder is good and the masa still sinks, it usually comes down to one of three things: not enough air, not enough fat, or not enough broth. Here’s what to try, in the order I’d try it:

1. Whip it longer, at a higher speed. In my experience, this solves it almost every time. Give it another few minutes before testing again.
2. Check the hydration. If the masa feels dry or stiff, whip in 1/8 cup of broth and test again.
3. Add a bit more fat, if you want to try it. Some people will add more fat into the masa and whip it in before testing again. I’m not really a fan of this because I don’t like my tamales to feel greasy from too much fat. If you do want to try it, you can start by adding 1/8 cup more.

Ready to Make Tamales

Once your masa passes the float test, you’re ready to start assembling. From here, it’s time to spread the masa onto your corn husks and add your fillings.

If you need a hand with that next step, I’ve got a full guide on how to spread masa evenly on corn husks, plus one on how to fold tamales once they’re filled.

More Tamales Making Tips

Make sure you read through all of the helpful tamales making tips in my series. If I haven’t answered one of your questions don’t hesitate to reach out.

• How to Prepare Corn Husks for Tamales
• Masa For Tamales | No Lard Recipe
• How to Spread Masa on Corn Husks for Tamales
• How to Fold Tamales
• How to Steam Tamales without a Steamer
• How Long Does It Take to Cook Tamales on the Stove?
• How to Reheat Tamales
• How to Cook Frozen Tamales
• How Long do Tamales Last
• How to Store Tamales
• What to Eat with Tamales | 24 Tamales Side Dishes

FAQ

What if my tamale masa is too sticky or wet?

Sticky or wet masa usually means it needs more masa harina or fresh masa, not more whipping. Mix in a tablespoon at a time until it firms up. This is a different issue than sinking masa, sticky masa is a hydration problem, sinking masa is an air problem, so the fixes aren’t the same.

Can I use tamale masa that doesn’t float?

Yes. If your masa isn’t sticky and tastes right, it’s fine to use even if it never floats. The tamales may turn out a bit denser, but spreading a thinner layer of masa on the corn husks helps keep them from feeling heavy.

Why does masa need to float?

Floating means your masa has enough air whipped into it, which is what gives tamales their light texture instead of a heavy, dense one. It’s a helpful sign, not a strict requirement.

Can I do the float test if I mixed my masa by hand?

Yes, the float test works the same either way. Hand-mixed masa can just take more time and effort to whip in enough air, so don’t be surprised if it needs a bit longer before it passes.