These Sweet and Spicy Cucumber Slices are tangy and sweet with a little bit of a kick. It makes a great side-dish for summer BBQ’s. There’s something incredibly refreshing about cold cucumbers, right? If you have an abundance of cucumbers coming out of your garden, then this recipe is especially for you. Aside from eating them plain, we love these on salads or added to lettuce wraps or just plain from the fridge. They’re unique and you have to make them to see why I love them so much!

Ingredients And Equipment Needed
This is just a preview of ingredients and method, keep scrolling for full printable recipe.
Cucumber Slices
- Cucumbers – I am using standard garden cucumbers here (the variety most often sold in grocery stores) but feel free to use any variety you like.
- Kosher salt
- Rice vinegar – Also called rice wine vinegar. You can use plain or seasoned.
- Water
- Granulated sugar
- Red pepper flakes – Optional. Feel free to leave them out if you don’t like heat.
Equipment
- Mandolin – A mandoline will be your best friend here, but you can certainly slice by hand if you’d like. You can do peeled or unpeeled cucumber and you can leave them whole, or cut them in half. Your choice.


How to make Sweet and Spicy Cucumber Slices
- Slice cucumbers, place them in a colander and sprinkle with salt. Salting cucumbers draws out the moisture. If you don’t do this step, then all of this moisture will come out in the final dish and water it down. Place the colander in a pan to catch the drips and put the chole set-up in the fridge for a bit.
- While your cucumbers are draining you can prepare the simple marinade. Heat up rice vinegar, sugar, and red pepper flakes in a pan and after it’s reduced add some minced red onion. Honestly, you can leave out the pepper flakes if you don’t want any heat. These taste great sans pepper flakes as well.
- Pull your cucumber slices out of the fridge and pat dry. Transfer to a bowl and toss with the marinade.
- You’ll want to let these sit and marinate in the fridge for a while before you eat them. They get better with time, so give yourself at least a few hours chill time. They’re also great the next day, and even several days later. They become more like pickle-texture they longer they sit (which I like!).


Storing and Other Tips
- Store finished cucumbers in an airtight container in the refrigerator and enjoy within 3-5 days for best results.
- These cucumber slices are great as a snack right out of the fridge, as a side dish, or on top of a salad or lettuce wrap.
- From the comments section: Many people have used apple cider vinegar with success!

Frequently Asked Questions
Yes, feel free to make these using your favorite sugar substitute.
It’s usually not necessary to rinse the cucumbers, as the moisture being pulled out will take the salt with it as it drains. However, rinsing is always an option if you’re worried about it, or if you are using a strong salt, such as sea salt.

Sweet and Spicy Marinated Cucumbers
Equipment
- 1 Mandolin
Ingredients
- 1 ½ pounds cucumber about 3 medium, thinly sliced (peeled or unpeeled)
- 2 teaspoons kosher salt if using table salt, use only 1 teaspoon
- ½ cup rice vinegar seasoned or regular
- ½ cup water
- 3 tablespoons sugar
- ¼ tsp red pepper flakes optional if you don’t want any heat.
- 2 tablespoons minced red onion
Instructions
- Place cucumber slices in a colander sitting over a bowl, sprinkle with salt and toss well. Let sit for 1 hour refrigerated. Toss the cukes a few times while they drain if you remember. While cucumber slices are draining, prepare marinade.
- Combine vinegar, water, sugar. red pepper, and onion in a small saucepan; bring to a boil. Reduce heat, cook until reduced to a 1/3 cup (about 10 minutes). If for some reason you boil for too long, just add a little water until you have 1/3 cup. Remove reduction from heat and add onion. Let mixture cool to room temp.
- When cucumbers are done resting, pat them dry with a few paper towels and then combine with the vinegar reduction. Chill for at least a few hours before serving. They improve with time!
Notes
- Note: I have successfully made these with sugar substitute (like Truvia) as well.
- Tip: Sometimes I like to double the marinade to make them extra flavorful!
- Store finished cucumbers in an airtight container in the refrigerator and enjoy within 3-5 days for best results.












Questions & Reviews
Your pictures look absolutely stunning! I love the use of the mandoline so the slices are super thin. When I make pickles or anything similar I love to keep the slices as thin as the ones you showed! Thanks for sharing your recipe!
These are fabulous! Leave in the fridge overnight. Not sure I’ll ever eat pickles from a jar again. Thanks!
Never heard of cooking the vinegar sauce is there a particular reason for cooking the sauce?
Yep, you’re making a reduction. The sugar dissolves and then water evaporates to create basically a savory simple syrup.
Just made this last night to accompany our thai curry for dinner. It was fantastic! I used english cucumbers and my spiralizer for fun. Thanks for the great recipe! Definitely a keeper!
Which type of cucumber do you recommend? In the photos it looks like you’re using an English cucumber. Have you tried it with a garden cucumber?
You can really use any cucumber you like. I just use regular, standard cucumbers, and I make them all summer long with cucumbers from the garden!
They eat with like every meal in Thailand. Cept they use shallots instead of red onion.
I love Love this, thanks for sharing absolutely everything you did, it was just enough! I’m sooo excited to see this recipe because I’ve been craving cucumbers and I smelled and seen these cucumbers at the flea market and I was in ahhhhh, this recipe is everything I wanted. ! Thank you
Signed a sudden cucumber craver
I made these a few times in the last 2 weeks. Really good! Last night I used a habanero pepper with just a couple dashes of the crushed red pepper. Gave them some more kick!
You need to rinse off the salt after the cukes have sweat for a half hour or so. Also, I like to scoop out the seeds from my cukes before sweating them. That way they last longer in the fridge. Instead of using dried chili flakes, try adding a thinly sliced fresh green or red (or both) thai chili pepper. Careful, though — these are HOT.
After this is made and it has chilled in the fridge for a couple of hours, does it stay in the fridge or can you store it in your pantry? How long of a shelf life does it have? Thanks!
They need to be stored in the refrigerator, and they are good for… As long as they taste good 🙂