Frequently Asked Questions

Kosher knife sharpening is the process of sharpening blades using dedicated, category-specific equipment — separate wheels and tools for meat (fleishig), dairy (milchig), and pareve utensils. Each knife is sharpened and then kashered under rabbinical supervision, so every blade returns to your kitchen meeting strict halachic standards with full documentation.

Yes. Every sharpening job at Kosher Blades is performed under rabbinical supervision. After sharpening, each blade goes through hag'alah (boiling water kashering). We provide written documentation for every batch, which satisfies the requirements of kosher-certifying agencies for commercial clients.

Absolutely. We maintain fully separate sharpening wheels, stropping belts, and honing rods for fleishig (meat), milchig (dairy), and pareve knives. No cross-contact ever occurs between categories. This is a core part of our kashrus protocol and what sets us apart from general sharpening services.

We sharpen chef's knives, boning knives, cleavers, fillet knives, deli slicers, bread knives, paring knives, butcher knives, poultry shears, and specialty blades. We handle everything from home kitchen sets to large commercial batches for restaurants, butcher shops, and food processing facilities.

Our standard turnaround for commercial clients is 48 hours. Rush and emergency same-day service is available for urgent needs — just call us. For private home clients, we schedule a convenient pickup window and have your knives back within 48 hours as well.

Yes. For commercial clients we offer on-site service so your kitchen operations are never interrupted. We bring our certified equipment to your location, sharpen and kasher your blades on-premises, and hand them back the same visit. Contact us to schedule a service visit.

You can schedule by calling or texting (862) 895-6233, or by sending an email to info@kosherblades.com. You can also fill out the contact form on our website. For commercial accounts, we set up a recurring schedule. For private clients, we coordinate a pickup date and time that works for you.

We strongly recommend booking 2–3 weeks before major holidays — Passover (Pesach), Rosh Hashanah, Sukkos, and other Yomim Tovim. Demand spikes dramatically before these dates. Booking early guarantees your knives are back in time and properly kashered for the holiday.

We proudly serve private homeowners too! You do not need to be a restaurant or business to use Kosher Blades. Whether you have a set of Shabbos knives that need freshening up or a full kitchen drawer of blades, we offer the same certified kosher sharpening and kashering service to private clients as we do to commercial accounts.

Simply contact us to arrange a pickup window. We'll come to your home, collect your knives, sharpen and kasher them at our facility under rabbinical supervision, and return them to you — typically within 48 hours. There is no minimum blade count required for home pickups.

Yes. Drop-off is available for clients who prefer it. Contact us in advance to confirm the drop-off location and timing. This option is especially convenient for clients near our service area in the Tri-State region.

We serve the full Tri-State Area: all five New York City boroughs (Manhattan, Brooklyn, Queens, Bronx, Staten Island), Westchester County NY, Rockland County NY, Bergen County NJ, Hudson County NJ, Essex County NJ, Passaic County NJ, and Fairfield County CT. If you're unsure whether we cover your location, just give us a call.

Yes. We regularly serve clients throughout New Jersey — including Teaneck, Englewood, Lakewood, Passaic, and Clifton — and in Fairfield County, Connecticut. Our mobile team covers the Tri-State Area on regular rotating routes so most clients can expect service within a day or two of scheduling.

We use hag'alah — immersion in boiling water — which is the halachically required kashering method for metal utensils such as knives. This is performed under rabbinical supervision after every sharpening job. Documentation is provided for each batch, suitable for presenting to a mashgiach or certifying agency.

A knife used for meat within the past 24 hours (ben yomo) that is sharpened on the same wheel as a dairy knife could transfer absorbed flavor according to halachic opinion. This is why we use entirely separate equipment for each category — eliminating any ben yomo cross-concern. General sharpening services do not account for this at all.

Yes. Pareve knives receive their own dedicated sharpening track and kashering to ensure they remain pareve. Despite what many assume, pareve does not mean "neutral by default" — a pareve knife sharpened on fleishig equipment would take on a fleishig status. We handle this correctly.

Yes. Commercial clients receive written documentation for each service batch, including category breakdown and confirmation of kashering. This documentation is accepted by major kosher-certifying agencies and satisfies the requirements of mashgichim conducting kitchen inspections.