Azuki beans are red small beans and they are relativelyare popular in Japan.

They are used in various Japanese desserts and you can get onethem in any grocery stores.

I wanted to cook azuki beans from scratch by myself because store bought ones have lots of sugar.

I googled azuki and found out they are rich in polyphenol and fiber, p. Plus, they are low-fat and high-protein.

So, if I don't add sugar, they arewill be a pretty healthy food.

I cooked azuki beans and then, made soy milk pudding with the beans.

When I ate it, I added some honey.

Azuki beans are red small red beans and they are relatively popular in Japan.

English has a concept of the correct order of adjectives. Unfortunately, that means "red small beans" sounds very unnatural and "small red beans" is what native speakers would say.

Here's a video about it: https://www.youtube.com/watch?v=mTm1tJYr5_M

They are used in various Japanese desserts and you can get one in any grocery stores.

So if I don't add sugar they are pretty healthy food.

I cooked azuki beans and then, made soy milk pudding with the beans.

Azuki beans are red small red beans and theythat are relatively popular in Japan.

They are used in various Japanese desserts, and you can get onefind them in any grocery stores.

I wanted to cook azuki beans from scratch by myself because store -bought ones have lots of sugar.

I googled azuki and found out they are rich in polyphenol and fiber, p. Plus, they are low-fat and high-protein.

So if I don't add sugar, they are actually a pretty healthy food.

I feel like it sounds more natural to add "actually" so that you can express a contrast/realization. Like "Surprisingly, they’re healthy”. What you wrote is fine though!

I cooked azuki beans and then, made soy milk pudding with the beans.

Azuki Beans

A note that "Azuki" isn't strictly wrong, but the most common way of spelling it appears to be "Adzuki"

Azuki beans are red small, red beans and they are relatively popular in Japan.

Word order feels more natural this way around. A comma is generally used to separate multiple adjectives

They are used in various Japanese desserts and you can get onethem in any grocery stores.

I would guess that you almost never buy a single bean on its own so it makes most sense to talk about them using a plural. "grocery store" should be singular here.

I wanted to cook azuki beans from scratch by myself because store bought ones have lots of sugar.

"by myself" feels redundant here

I googled azuki and found out they are rich in polyphenol and fiber, plus they are low-fat and high-protein., so if I don't add sugar they are pretty healthy food.

Extra space should be removed. I would also recommend combining the following sentence with this one.

So if I don't add sugar they are pretty healthy food.

I recommend combining with the previous sentence.

I cooked azuki beans and then, made soy milk pudding with the beansm.

Comma not needed. Repetition of "beans" can be avoided by using "them".

When I ate it, I added some honey.

Comma should be added here.

Azuki beans are red small red beans and theythat are relatively popular in Japan.

It's not exactly a rule, but conventionally, you put size adjectives like "small" before color adjectives like "red". (As an aside, the bean is sometimes written as "adzuki" as well in English, but I personally prefer the spelling you use.)

They are used in various Japanese desserts, and you can get one insome from any grocery stores.

"Some" is more appropriate here, unless you are actually buying a single azuki bean instead of a bagful of them.

I wanted to cook azuki beans from scratch by myself, because store -bought ones (often) have lots of sugar added to them.

The (corrected) sentence works without the word "often", but adding that word accounts for the possibility that there is at least one store that doesn't add sugar to their azuki.

I googled azuki and found out that they are rich in polyphenol and fiber, plus they areas well as being low-fat and high-protein.

"Googled" has become genericized enough to be written in small letters, but I personally don't care for it, and I still capitalize it myself.

So if I don't add sugar to them, they are a pretty healthyful food.

I am aware "healthy food" is a popular phrase these days, but properly speaking: bodies are "healthy", while foods are "healthful". (One of my very few grammatical peeves.)

I cooked some azuki beans, and then, made soy milk pudding with the beans.

When I ate it, I added some honey.

Azuki beans are red small red beans and they are relatively popular in Japan.

They are used in various Japanese desserts and you can get onethem in any grocery stores.

Beans (plural) => them

What follows "any" will almost always be singular

I wanted to cook azuki beans from scratch by myself because store -bought ones have lots of sugar.

So if I don't add sugar, they are a pretty healthy food.

I cooked azuki beans and then, made soy milk pudding with the beans.

When I ate it I added some honey before eating it.

The way you wrote it would be like you started eating it, stopped eating to add honey, then continued eating.

If you sat down with your bowl and put honey on the beans before starting to eat, you would write it as I edited here.