Taste the Difference: Osem’s Kosher Certified Thomy Mayo, Mustard, & Ketchup
When it comes to condiments, quality is everything. Enter Thomy, the iconic Swiss brand owned by Nestle, now available on kosher tables in the U.S. by Osem, with Star-K kosher certification for three essentials: ketchup, mustard, and mayonnaise.
Elevating Everyday Classics
- Mayonnaise: Thomy’s mayonnaise is celebrated for its luxuriously creamy texture, natural richness, and subtle tang. With high-quality sunflower oil and real egg yolks, it stands out among generic mayos, adding undeniable depth to sandwiches, salads, and dips.
- Mustard: Thomy’s mustard brings a refined Swiss balance—not too acidic, never harsh, but with enough character to wake up anything from a deli sandwich to roasted potatoes. It’s smooth, mildly spicy, and a staple for anyone who appreciates flavor detail.
- Ketchup: Unlike sugary alternatives, Thomy ketchup tastes bright and honest, allowing the natural sweetness and acidity of tomatoes to shine through. It’s a perfect match for fries, burgers, or anywhere a pop of real tomato punch is wanted.

Kosher Without Compromise
For those who care about both taste and standards, the Star-K symbol on each jar or bottle delivers total confidence—each Thomy product in Osem’s U.S. lineup is produced under strict kosher supervision from ingredient sourcing through final packaging. With Star-K’s respected certification, kosher families, chefs, and food enthusiasts know they’re getting both authenticity and quality.
Why Foodies—and Chefs—Prefer Thomy
- Ingredient Integrity: No ingredient overkill here. Each recipe highlights what matters, with no cheap fillers or off-tastes to distract from pure, balanced flavor.
- Swiss Heritage: Decades of reputation in Europe mean these condiments aren’t just afterthoughts—generations of taste-testers have dialed them in.
- Versatility: Whether dressing up a lunchbox sandwich, making a classic deviled egg, or finishing housemade schnitzel, Thomy’s trio performs reliably and deliciously.

Important Note for Kosher Consumers
It’s essential to understand that only specific Thomy products in the U.S. are distributed by Osem and certified by Star-K, sometimes alongside other certifying agencies such as Chasam Sofer. However, the kosher availability of Thomy products extends beyond Osem’s imports:
- Varieties in kosher supermarkets may also be imported by distributors such as Hazon Foods, which is based in Antwerp. These items might carry different kosher certifications depending on their supply chain and target market.
- Some Thomy products available through various distributors may be certified by other kosher authorities, or in some cases, may not be certified as kosher at all.
Given these differences, anyone who observes kosher dietary laws should always check the packaging for up-to-date kosher symbols and certifier details. Due diligence ensures that you’re selecting authentic Thomy condiments that meet your personal kosher standards.
What’s in the Osem Kosher Thomy Lineup?
| Product | Kosher Certifier | Key Features |
|---|---|---|
| Mayonnaise | Star-K | Ultra-creamy, egg-based, tangy |
| Mustard | Star-K | Mildly spicy, smooth Swiss flavor |
| Ketchup | Star-K | Bold tomato taste, well-balanced |
Why Osem’s Star-K Certified Thomy?
For anyone who refuses to compromise on either culinary standards or kosher observance, Osem’s Thomy delivers the trio you’ll keep reaching for. Authentic, certified, and unmistakably tasty: a rare import that truly deserves fridge-door real estate.