44 housemade syrups, chef-curated flavor combinations, and ocean views on Kalakaua Avenue. Here's everything you need to know.
Address
2570 Kalakaua Ave, Honolulu (Twin Fin Hotel)
Hours
Daily 10:00 AM – 10:00 PM
Price
$10 per item (all items same price)
Payment
Card only (no cash) • Apple Pay accepted
Parking
Free at Kapiolani Park • Zoo lot ~$1/hr
View Sin Ice Stir on the Food Map
Get directions, see nearby restaurants, and save for later
Forget everything you know about ordering shave ice in Hawaii. No more staring at a board of 40+ syrups trying to figure out which three flavors won't taste weird together.
Sin Ice Stir (pronounced "sinister") just opened on Kalakaua Avenue, and they're doing something completely different. Owner Bill Tobin — who also owns Tiki's Grill & Bar upstairs — brought in his executive chef to create a curated shave ice experience.
Here's how Bill explained it to me:
"A lot of shave ice places have 40 different flavors on the wall. If you put three flavors together, they might sound really good, but when you put them on the shave ice and they mix together at the bottom, it might be really sweet but it might not be good. We specifically picked flavors that taste delicious on the ice but also when you get down to the bottom and those flavors mix together. We've tested everything."
The flavors were developed by Chef Ronnie Nasuti — Executive Chef of Tiki's Grill & Bar — and Chef Vanessa Mello. They created 44 housemade syrups and designed each shave ice as a complete recipe.
Every recipe starts the same way: shave ice layered over an ice cream base. Then comes the chef-selected syrups and toppings.
The menu is split into two personalities — a nod to the original concept, which was going to be a bar with shave ice. As Bill told me:
"Even though we say 'naughty,' it's a good kind of bad. Nobody's going overboard with anything — we're just having fun."
Flavors that people are mostly familiar with and comfortable with. Easily approachable. Example: Soft Launch is strawberry matcha — people are very familiar with that.
A little more adventurous, a little more extreme. Example: The Wanted is spiced mango and li hing guava — familiar tropical fruits with added spices to make them more adventurous.
All items are $10 and include shave ice layered over an ice cream base. The menu has 4 year-round classics and 4 seasonal flavors that rotate monthly.
😇 NICE • Most Popular
The rainbow showstopper and the #1 recommendation for first-timers.
😇 NICE • Contains Caffeine
Strawberry meets matcha — approachable flavors people are very familiar with.
😈 NAUGHTY
Tropical fruits you know — mango and guava — but with added spices to make them more adventurous.
😈 NAUGHTY
Pomegranate molasses meets pistachio — a unique Middle Eastern-inspired combination.
These flavors end on January 31st. New February flavors launch February 1st!
😇 NICE • Contains Caffeine
Color-changing butterfly pea tea with citrusy calamansi.
😇 NICE
Floral pink peppercorn hibiscus with bright lemon peel.
😈 NAUGHTY
The most daring option — white chocolate seaweed meets black sesame.
😈 NAUGHTY • Owner's Favorite
Bill's personal favorite. Housemade Froot Loop syrup paired with floral lavender honey, topped with actual Froot Loops cereal.
Find Sin Ice Stir on the Map
2570 Kalakaua Ave — Twin Fin Hotel, Waikiki
I asked Bill what he recommends for first-timers:
"I would say Shark Bait if they're not very adventurous. If they're adventurous, I would say try Adult Supervision. It's delicious — it's made with Froot Loops and has a Froot Loop flavor but also lavender honey."
Start here. It's the most popular for a reason — rainbow colors for the 'gram, gummy sharks for fun, and flavors everyone loves.
The owner's personal favorite. Bill says it's delicious — Froot Loop syrup with lavender honey. Only available through January!
💡 Pro tip from Bill: "I recommend people try the seasonal flavors before the end of January because they won't be available in February."
Sin Ice Stir is located at the Twin Fin Hotel on Kalakaua Avenue, right across from Kapiolani Park and the ocean. As Bill described it:
"It's a beautiful view every day. We're looking at our customers but we also get to look out at the ocean and see surfers, people swimming, boats going by, and the waves. It's really nice."
| Parking Option | Cost | Distance |
|---|---|---|
| Kapiolani Park (street parking) | Free | 5-minute walk |
| Honolulu Zoo Parking Lot | ~$1/hour | Right across street |
🚻 Restrooms: Available upstairs in the Twin Fin Hotel pool lobby. Take the stairs around the corner from the shop.
Get Directions to Sin Ice Stir
View on map with parking options and nearby food spots
Sin Ice Stir delivers on its promise. The chef-curated approach means you don't have to worry about whether flavors will work together — they've already tested everything.
At $10, it's not the cheapest shave ice in Hawaii, but you're getting housemade syrups, an ice cream base, premium toppings, and a Kalakaua Avenue ocean-view location. For what you get, it's fair.
As Bill put it: "We're not your grandma's shave ice. This is new. This is adventurous. And we think you're gonna like this even better."
Bottom line: If you're in Waikiki and want shave ice, Sin Ice Stir should be your first stop. Order the Shark Bait, grab a seat facing the ocean, and enjoy.
Written by Nate
I've reviewed many restaurants across Oahu. Have questions? DM me @nateeatshawaii
Last updated: January 17, 2026
Get the latest food spots, hidden gems, and restaurant reviews
Get featured on Nate Eats Hawaii and reach readers looking for their next meal.
Let's Talk →
I pay for my own meals. No restaurant pays to be featured. Why trust this guide?