Fermented Twice-Fried French Fries Recipe - Viral Tiktok Food Hack!
Fermented Twice-Fried French Fries Recipe - Viral Tiktok Food Hack! is a medium American recipe that serves 4. 250 calories per serving. Recipe by LoveYourFood on YouTube.
Prep: 50 hrs | Cook: 12 min | Total: 50 hrs 32 min
Cost: $5.61 total, $1.40 per serving
Ingredients
- 2 lb Russet Potatoes (scrub lightly, keep skin for natural bacteria)
- 1 tsp Mustard Seeds (whole seeds)
- 1 tsp Black Pepper (freshly ground if possible)
- 2 tbsp Salt (kosher or sea salt for brine)
- 4 cup Water (filtered)
- 2 qt Vegetable Oil (high smoke‑point oil such as canola, peanut or sunflower)
- 1 tsp Salt (finishing) (to season fries immediately after second fry)
Instructions
Prepare Brine
Combine 4 cups water, 2 tbsp salt, 1 tsp mustard seeds, and 1 tsp black pepper in a large pot. Bring to a boil, stir until the salt dissolves, then remove from heat and let cool to a tepid temperature (about 30 °C).
Time: PT35M
Wash and Cut Potatoes
Rinse the potatoes under cold water, scrub lightly to remove dirt but keep the skins. Cut each potato into 1/4‑inch thick fries. Rinse the cut fries in a colander to wash off excess surface starch.
Time: PT15M
Ferment Potatoes
Pack the raw fries tightly into the fermentation jar, add the mustard seeds and black pepper, then pour the tepid brine over them until fully submerged. Loosely place the lid on – it should allow gases to escape but keep contaminants out. Let sit at room temperature for 48–72 hours, skimming any surface scum once daily.
Time: PT48H
Drain and Rinse
After fermentation, pour off the brine, then rinse the fries several times in cold water to remove the spices and any lingering odor. Pat the fries completely dry with paper towels.
Time: PT10M
First Fry (Blanch)
Heat the vegetable oil in a deep fryer or heavy pot to 300 °F (150 °C). Working in small batches, add the fries and fry for 6–8 minutes until they are cooked through but show no color. Remove with a slotted spoon and drain on paper towels.
Time: PT8M
Temperature: 300°F
Cool and Chill
Transfer the blanched fries to a zip‑lock bag, seal loosely, and refrigerate for at least 1 hour (or overnight) to let the starches set.
Time: PT1H
Second Fry (Crisp)
Raise the oil temperature to 375 °F (190 °C). Fry the chilled fries for 3–4 minutes, or until they turn lightly golden‑pale and become ultra‑crisp. Remove, drain, and immediately sprinkle with 1 tsp finishing salt while still hot.
Time: PT4M
Temperature: 375°F
Serve
Place the fries in a serving bowl and enjoy immediately with your favorite dip or alongside a burger.
Time: PT2M
Nutrition Facts
- Calories
- 250
- Protein
- 3 g
- Carbohydrates
- 35 g
- Fat
- 10 g
- Fiber
- 3 g
Dietary info: Vegan, Gluten‑Free, Dairy‑Free
Allergens: Mustard
Last updated: April 17, 2026








