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Keto Shoyu Chicken

Deeply savory keto shoyu chicken, my sugar-free spin on the classic Hawaiian comfort dish, at just 2.5g net carbs and 28.1g protein. Eight simple ingredients, basically zero effort: slow cooker, or sous vide for next-level juicy chicken.
  • 2.5gnet carbs
  • 28.1gprotein
  • 125minutes
  • 6servings

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I first got this recipe from my good friend Sarah, and it’s one of those tried-and-true family dinners that’s been on repeat in her house for years. The kind of meal you don’t even have to think about…you just know it’s going to be good every single time. After she made it for me, I immediately went home and started playing around with it to make a low carb, sugar-free version that would fit how I eat, without losing what makes it so good in the first place.

Chopped cooked chicken pieces spread out on a cutting board, ready to be served or added to a dish.

Traditional shoyu chicken is all about that balance of salty, slightly sweet, garlicky, gingery sauce that soaks into the chicken as it cooks low and slow. Most versions rely on sugar to get that classic flavor, but I swapped that out for a sugar-free sweetener and adjusted the ratios so it still hits the same notes. When I brought my version to a potluck recently, Sarah tried it…didn’t say a word…went back for seconds…and only then did I tell her it was my low carb version. She couldn’t even tell the difference.

What I love about this recipe, and why it’s stayed in rotation for both of us, is how simple it is. We’re talking 8 ingredients, one pot, and almost no prep. You can toss everything into the slow cooker and let it do its thing, or if you want the absolute juiciest, most tender chicken, the sous vide method takes it to a whole different level. Either way, the chicken ends up soaking in that rich shoyu-based sauce until it’s fall-apart tender and packed with flavor.

Bowl of chopped shoyu chicken coated in a rich, glossy sauce.

Slow cooker vs. Sous vide: which method?

You’ve got two really easy ways to make this, and it just depends on how hands-off you want to be…or how picky you are about texture. The slow cooker is my go-to on busy days, just dump everything in, set it, and a few hours later you’ve got tender, flavorful chicken sitting in that rich shoyu sauce. It’s simple, reliable, and perfect when you don’t want to think about dinner. There is no marinating step, the chicken picks up all the flavor while it cooks.

If you want next-level juicy chicken, this is where sous vide shines. Sealing everything in a bag and cooking it low and slow keeps all that moisture and flavor locked in, so the chicken comes out incredibly tender, almost restaurant-quality. It does take a little more planning, but if you’ve got the time, it’s absolutely worth it.

Storage information

This shoyu chicken stores really well, which is why I make a big batch and use it throughout the week.

Once it’s cooled, transfer the chicken and sauce to an airtight container and keep it in the fridge for up to 4 days. The flavor actually gets even better as it sits, so leftovers are a win here.

If you want to freeze it, you can store it in a freezer-safe container or bag for up to 2-3 months. I like to freeze it with some of the sauce so it doesn’t dry out when reheating. Let it thaw overnight in the fridge before warming up.

To reheat, you can microwave it or warm it gently on the stovetop over low heat. If the sauce has thickened in the fridge, just add a splash of water to loosen it back up.

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The recipe

Keto Shoyu Chicken

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Prep 5 min Cook 120 min Total 125 min Serves 6

Ingredients

Servings 6

Keto Shoyu Chicken Ingredients

Step by Step Instructions

  1. Make sauce

    In a medium bowl, combine the soy sauce or tamari, water, sugar-free sweetener, Worcestershire sauce, red pepper flakes, ginger paste, and garlic paste. Whisk until everything is mixed together.

    For this step

    • 1 1/2 cups soy sauce or tamari
    • 1 1/2 cups water
    • 1 cup sugar-free sweetener
    • 1 teaspoon Worcestershire sauce
    • 1 teaspoon garlic paste or powder
    • 1 teaspoon ginger paste or powder
    • 1/4 teaspoon red pepper flakes
    Measuring cup filled with dark soy-based marinade being stirred with a whisk.
  2. Slow cooker method

    For the slow cooker method: Add the chicken to the bottom of the slow cooker, then pour the shoyu sauce over the top. Cover and cook on high for 4 hours, or until the chicken is tender and cooked through. Once the chicken is done, remove it from the slow cooker and shred it with two forks or slice it, depending on how you want to serve it.

    For this step

    • 2 lbs boneless, skinless chicken thighs or breasts
    Raw chicken in a slow cooker as marinade is poured over the top.
  3. Sous vide method

    For the sous vide method: Add the chicken to a vacuum seal bag, then pour in the shoyu sauce. Vacuum seal the bag, then sous vide at 145°F for 2 to 4 hours, until the chicken is juicy and cooked through.

    Vacuum-sealed bag of chicken and marinade submerged in a water bath for sous vide cooking.
  4. Thicken sauce

    To thicken the sauce, pour the cooking liquid into a saucepan. Whisk together either 2 tablespoons cornstarch with a little water, or 2 teaspoons arrowroot powder with a little water, then stir the slurry into the sauce. Simmer the sauce for 10 to 15 minutes, stirring occasionally, until it thickens into a glossy sauce. Pour it over the sliced or shredded chicken and serve over cauliflower rice, veggies, or enjoy it on its own.

    For this step

    • 2 tablespoons cornstarch or 2 teaspoons arrowroot powder
    Sauce simmering in a saucepan on the stove, beginning to thicken.

Nutrition

Per serving: 1/6 of recipe

Calories
221
Fat
9.9g
Protein
28.1g
Total carbs
2.5g
Net carbs
2.5g

Nutrition is an estimate calculated from the ingredients listed. Brands vary, so check labels if you track closely.

Frequently Asked Questions

Can I use chicken breasts instead of thighs?

Yes, both work, and I list either cut in the recipe card. Thighs have more fat, so they come out more tender and flavorful. Breasts are leaner but still turn out really good, especially if you sous vide them.

Can I make this in the Instant Pot instead?

Yes. I cook it on high pressure for 10 to 12 minutes with a quick release. The texture comes out a little different from the slow cooker or sous vide versions, but it is still delicious.

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Reviews

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4.5 from 17 ratings, 9 written

Made this recipe?

Replying to Min N.

Your rating

Maria Q.

Good simple dinner, but the Worcestershire does nothing here. Left it out the second time and couldn’t taste a difference.

Reply

Christina T.

Can I make this with chicken breasts or does it really need to be thighs? I only have breasts in the freezer.

Reply

Tamika

Made it in the slow cooker last night. Sauce came out thin but the flavor was good.

Reply

Gina

Two times in and it’s already a weekly staple here!

Reply

Annie Lampella

Gina, two times to staple is quick. Try the sous vide version at some point, the chicken comes out way juicier.

Reply

Patrick

solid four, cornstarch made it gluey, arrowroot next time

Reply

Annie Lampella

Thanks Patrick, that’s good to know. If you ever go back to cornstarch, I’d start with half the amount, because the sauce keeps thickening for a few minutes after you take the pan off the heat and it’s easy to overshoot. Arrowroot will get you there too.

Reply

Min N.

Wasn’t sure the arrowroot would thicken the way shoyu chicken sauce is supposed to, the kind that glazes the rice underneath. It does, and for three minutes I was eating at a table I haven’t sat at in twenty years.

Reply

Annie Lampella

Thank you Min. Arrowroot gives that glossy glaze cornstarch misses, and what a thing to get back.

Reply

Tricia

Hawaiian food was the first thing I wrote off going keto. Six ingredients, slow cooker, the sauce is right. Four stars. I’d thicken the sauce before serving, but that’s a me thing.

Reply

Annie Lampella

Nobody should have to give up Hawaiian food. I’m glad this one made it back on your list.

Reply

Emily

I grew up eating shoyu chicken and this is the first keto version that actually tastes right to me.

Reply

Annie Lampella

Emily, that sweetener ratio took me forever to land. I grew up with it, so I’ll take that.

Reply

Elaine

Four from me, five from my husband if it had more heat

Reply

Annie Lampella

Elaine, bump the red pepper flakes to 1/2 tsp and that gets him to five. Or stir in a spoonful of chili garlic sauce at the end if he wants heat with a little more going on.

Reply

Lisa

1 cup of sweetener into a savory chicken dish had me second-guessing it, but the ingredient list is short so I went for it. Sauce doesn’t taste sweet like I expected. More savory somehow, with the sweetness hanging back instead of taking over. Chicken came out falling-apart tender in the slow cooker. A little salty for me, so I’ll pull back on the soy next time. Already planning batch two though.

Reply

Annie Lampella

Right call on the soy. I’d start with just 1/4 cup less before pulling back more, the sauce can go flat fast once you start cutting.

Reply

Sasha Garcia

Used fresh ginger and fresh garlic instead of the powder and the sauce hits completely different. There’s this brighter, almost floral edge that the dried stuff just doesn’t give you. Going heavier on the ginger next batch.

Reply

Annie Lampella

Fresh ginger especially. The powder is fine for weeknight stuff but fresh has that floral thing the dried version just can’t do. More ginger always.

Reply

Megan

Tried the sous vide version on batch four and now I’m annoyed I waited so long. The sauce actually clings in a way the slow cooker never managed.

Reply

Annie Lampella

Batch four and you’re still at it, lol. The sauce is just different, slow cooker just can’t get that cling.

Reply

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