Costco Pork Bun Baos - Better than Dim Sum Restaurants?


Red Moon Bao Pork Buns at Costco

Costco sells Red Moon Bao Pork Buns for $8.99. The pork buns can be found in the refrigerated deli area near other items such as the Chicken KatsuBarbacoa, and Chicken Burgers.

Each package weighs 24 ounces and contains a twin pack of 6 pork bao buns each. There are a total of 12 2-ounce pork buns.

Have You Tried Costco's Pork Buns?

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What are Pork Buns?

Pork buns are more commonly known as Cha Siu Bao or Char Siu Bao which means barbecue pork bun. These buns are steamed and contain a filling of Chinese barbecue pork.


Bao Means Bun

To go over the terminology, bao refers to a chinese style bun. The bao can either be filled and enclosed like a dumpling like these pork buns are, or the bun can take the shape of hard shell taco with the texture of a fluffy bread. 

At Restaurants, the open baos are usually served with duck and often in a build your own style. 

Char Siu or Cha Siu means Barbecue Pork

Char Siu or cha siu refers to the barbecue style pork that is included in these steamed pork baos.

The pork that is used isn’t the traditional American style shredded pork covered in bbq sauce; instead, the pork is roasted with spices, sweeteners, and red yeast rice to give the bbq pork its distinct bright red color.


Steamed vs Baked

There are two main ways to make a bbq pork bun: to steam or bake the buns. 

The steamed buns are typically white and just a few inches wide, while the baked pork baos are brown and usually 4-6 inches wide. Red Moon’s Pork Bao Buns are the steamed version. 

Baked pork buns have more cha siu filling and will be a little sweeter.

Dim Sum

Barbecue Pork Buns are typically eaten as dim sum, which essentially means that they are served as a series of small appetizers, similar to Spanish tapas. 


Char Siu Baos, along with Ha Gow (Shrimp Dumplings) and Siu Mai (Pork Dumplings), are some of the more popular dim sum dishes.

Costco Pork Bun Cost Comparison

Costco sells the 12-pack of cha siu baos for $8.99. Each individual Chinese barbecue pork bun will cost $0.75. 

This is a solid price for a steamed pork bun. They typically go for about $1-$1.25 or more at most dim sum restaurants.

Costco vs The Competition

Target sells a 6-pack of 1.3-ounce pork buns for $5.79. This is a price of $0.97 for considerably smaller pork buns. 

Costco porks buns offer the best value, by far! 

First Impressions

In the packaging, the pork buns look just ok. They are squished and clearly are mass-produced.

The bread doesn’t look to be of great quality. It looks very artificial and not doughy. 

Uncooked Pork Buns

Even after removing the pork bao buns from the packaging, they still are semi-squished. I’m hoping that by reheating the pork buns, we can rejuvenate them.

Costco Bao Pork Bun - Taste Test

I followed the heating directions with these Costco pork bao buns, but they came out just lukewarm. 

I put them back in the microwave for 20 seconds, and the end result was a sufficiently heated pork bun. 

Prepping the Cha Siu Bao for the Microwave

Bun Problems

The issue is that the bread was dry. I don’t know if it’s because of the additional time in the microwave or if the bread is just not that great to begin with (more likely), but the bao was not enjoyable. 


Even if the 20 more seconds dried out the bread, it isn’t great to have to decide between a lukewarm pork bun or a dried out one.

The Bun is Not Worth Eating

The bao didn’t offer a lot of taste which was expected, but it was also dry and unpleasant. The bread does a great job of holding in the Chinese barbecue pork, but that’s about it. 


There were a few of the pork baos where I was left with some excess bun that I didn’t bother to eat.

This is similar to Costco’s potstickers or wontons where the only tasty portion is the portion with the filling, and the rest of the exterior is just excess.

When I’m done with a meal like this, I’m usually left with a “graveyard” of buns/dumpling wrappers/breading.


The bread also had a sheen or a thin layer on the exterior that gave the bread the folded look that traditional restaurant quality pork buns have. 

In this case, it seems to be all for show.

Barbecue Pork (Cha Siu)

The barbecue pork wasn’t much better. The first thing you may notice is the brown color of the pork rather than the traditional red color that you will see at dim sum restaurants.  


The pork also tasted just ok, but not great. There wasn’t a ton of flavor, but the quality was solid enough. No overly fatty or oily pieces, and it was easily the best part of the pork bun.

I will also give Red Moon credit for the amount of sauce in the pork bun. It seemed to be the right amount, and it was nice to see some of that sauce soaked into the bao.

Not My Favorite

Overall, I really didn’t care for the pork bao buns from Costco. They were dry, small, and just not that good. 

I don’t expect the pork buns to compare to restaurant quality, but they weren’t even close and, in my mind, not even an acceptable at-home substitute.

Red Moon Pork Bao Bun Cooking Instructions

Red Moon makes these Chinese style pork buns super convenient to prepare. They are a heat and eat item and literally ready in 20 seconds in the microwave. It’s hard to beat that!



  • Remove Bao from the plastic bag. 
  • Place on a microwave-safe plate. 
  • Cover the bao in a moist paper towel and microwave for about 18-20 seconds.
  • Add 8-10 seconds for each additional bao.

Costco Bao Bun (Pork) - Nutritional Information

How Many Calories in Costco Bao Buns?

Each Red Moon Pork Bao from Costco will weigh 2 ounces and be considered one serving. Each pork bun contains 150 calories made up of 3.5 grams of fat, 25 grams of carbs, and 5 grams of protein.


This is somewhat what I expected in terms of nutritional value, but I am also a little surprised with how many carbs are in each little pork bun. The buns are not big by any means, and eating multiple will be rather easy. 

Eating just 3 buns would be considered a snack but would contain 75 grams of carbs. 

There is a moderate amount of sodium in each Costco pork bun at 280 mg. This is 12% of the daily recommended value and will add up when eating multiple barbecue pork baos.


Costco Food Database User Reviews

Have you tried this item? Let the rest of the Costco Food Database community know what you think. Leave a rating and review for this product. 

 5/5 (1)

I disagree with the author of the review. I thought that they were delicious. Make sure the paper towel is very damp and the bun won't dry out.

6 thoughts on “Costco Pork Bao Buns – Red Moon”

  1. Why aren’t you testing it by actually steaming the buns, thats how all the other pre-made baos should be done, regardless of instructions.

  2. Agreed, we had these and never even considered following the instructions to microwave them. Steamed them and had some of the new Japanese bbq sauce that Costco is selling on the side and it was delicious. Not dry at all, probably because of all that steam.

  3. Isabel Fernandez

    I microwaved two of them for 30 seconds total and put a wet paper towel over them before microwaving. I found them to be tasty and convenient! I have two of them with a side salad and that makes a great lunch.

  4. Steam them rather than microwaving with the wet towel…you’ll get a better result. So yummy with hoisin sauce

  5. Thankfully, I read the comments and others online and steamed them. My family really liked them, so I will buy again. Any kind of bread in the microwave turned hard when nuked.

  6. jeffrey oliver

    Honestly I don’t think whoever wrote this review even did any Type of experimenting with these bao. 1 for the price that’s pretty awesome. 2 they are super easy to make not dry at all if you know how to cook them . 3 the pork actually has plenty of flavor. I don’t think anyone in my household would complain. Shoot my wife makes fun of me calls them my vitamins lol. I’m a little upset we can’t buy them all year long at my Costco. But either way I haven’t found a better bao then this one from Costco. FYI if you cook six in the microwave and cover it with a damp paper towel for 2 mins they come out perfect

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