Receiving one of the lowest sous vide scores to date, we clearly aren't fans of the Gourmia GSV115. This product did exceptionally poorly in our circulation tests, wasn't particularly fast at heating up water, and scored below average in our accuracy assessment. It did keep a very constant water temperature but this wasn't enough to redeem its otherwise lackluster results.
Gourmia GSV115 Review
Pros: Super stable at holding a temperature, fairly inexpensive
Cons: Not the most accurate in our tests, subpar circulation
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Our Analysis and Test Results
To be fair, the Gourmia GSV115 did cook more than acceptable meals on more than one occasion but it just can't compare to the premium models. It does have one of the lowest retail prices of the group but isn't the best budget buy since there are even cheaper models that we thought outperformed it.
There was only a single one of our tests where the Gourmia GSV115 delivered a particularly noteworthy performance: temperature stability. This sous vide delivered an essentially perfect performance in our stability test, maintaining a steady temperature within 0.1°F over 60 minutes. We tested this by vacuum sealing a data logging thermochron in a bag held in the center of the water bath and having it record the temperature every minute for an hour. Points were awarded based on the amount of time each sous vide held the water at a stable temperature, with our data logger showing no variations whatsoever with the Gourmia GSV115.
Besides that, the interface and clamping system for this product aren't amazing but they are perfectly passable. The touch buttons are decently responsive but the controls aren't terribly intuitive, forcing you to hit the key with a "play" symbol to start it heating and to start the timer counting down once the water is preheated.
It has the typical screw action clamp mount but it doesn't spin freely, so it can take a bit longer to get it mounted securely than other products.
The Gourmia GSV115 scored average or below in the remainder of our tests. It didn't heat water or recover its set temperature impressively fast, taking 56 minutes to heat 9.5 quarts of cold tap water to 147°F when other sous vides took less than 40 minutes. The Gourmia GSV115 also didn't do particularly well in our accuracy tests, having an average error of 0.89°F under when the temperature was set to 135°F and 1.12°F under when it was set to 147°F . We measured this by taking the temperature with a calibrated precision lab-grade thermometer in six different locations throughout the water bath.
The Gourmia GSV115 also delivered an uninspiring performance in our circulation evaluation. We ranked and scored each sous vide machine by how long it took to disperse a small amount of food coloring injected into the corner of the water bath throughout the entire vessel to achieve a constant color shade. The Gourmia GSV115 was one of the slowest we have seen to accomplish this, taking over three minutes. The fastest models did this in 15 seconds or less.
The Gourmia GSV115 is one of the least expensive sous vides we have looked at but it also delivered one of the worse scores. We don't really think this makes it a great bargain buy, especially since we have found other models that score better and cost less.
All in all, we didn't find the Gourmia GSV115 to be a particularly inspiring sous vide machine. You can definitely use it to cook a tasty meal but it pales in comparison to other models that cost less and is considerably worse than other products that don't cost that much more. We generally would suggest you check out alternatives to this product when shopping for a new sous vide.
— Michelle Powell and David Wise