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San Jose Eggo plant, birthplace of the frozen waffle, to close

San Jose Eggo plant, birthplace of the frozen waffle, to close

Money Moves San Jose, CA local

Mars winds down the 90-year-old site after its 2025 Kellanova acquisition; 112 workers affected

September 4th, 2026: WARN notice filed for San Jose closure

Overview

Updated 1 hour ago

The frozen waffle was invented on this San Jose factory floor. The plant that made Eggos for parts of nine decades will stop production in November.

Kellanova, the Eggo company owned by Mars since 2025, filed a notice on Sept. 4 that it will close the site at 475 Eggo Way on Nov. 4. The closure removes 112 jobs and extends a consolidation of Eggo production that began before the Mars deal.

Why it matters

112 workers lose jobs as Mars closes the San Jose plant that invented the frozen waffle, ending a 90-year production run.

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Key Indicators

112
Affected employees
Workers at the San Jose site covered by the WARN filing.
90+ years
Years of waffle production
Dorsa family started the business in the 1930s; Kellogg bought it in 1970.
$35.9B
Mars' Kellanova purchase price
Deal announced August 2024, completed 2025.
61 days
WARN notice period
Filed Sept. 4, effective Nov. 4, 2026.

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People Involved

Organizations Involved

Timeline

1930s September 2026

8 events Latest: September 4th, 2026 · 1 week ago
Tap a bar to jump to that date
  1. Mars completes Kellanova purchase

    Acquisition

    Mars closes its roughly $35.9 billion deal for Kellanova.

  2. Rossville, Tenn. Eggo plant to close

    Closure

    Kellanova says the Rossville plant will close; 142 workers lose jobs.

  3. Kellogg splits into two companies

    Corporate

    Eggo moves to Kellanova; cereal business becomes WK Kellogg.

  4. Waffle shortage hits, San Jose keeps running

    Crisis

    Two of four Eggo plants shut; San Jose stays open and ramps up production.

  5. Kellogg buys Eggo

    Acquisition

    Kellogg acquires the family company from the Dorsas.

  6. Frozen waffle debuts

    Milestone

    Frank Dorsa introduces the frozen waffle, invented at the San Jose plant.

  7. Dorsa family starts waffle business

    Origins

    Began making waffle batter in San Jose.

Scenarios

1

San Jose Eggo plant closes as scheduled

Likely Resolves by Nov 4, 2026

Discussed by: California EDD WARN records; San Jose local media

Mars filed the required 60-day notice and shows no sign of reversing course. Barring a last-minute buyer or operational need, the plant ends production on Nov. 4, 2026. The 112 workers separate, and Eggo output shifts to Mars' remaining waffle facilities.

2

Closure delayed or partially reversed

Possible Resolves by End of 2026

Discussed by: Employment attorneys; local officials

A WARN notice is an intent to close, not a final decision. Worker groups or city officials could push for a reprieve, or Mars could slow the transition to manage supply. A delay would surface as a revised closure date in a new filing or company statement.

3

Site sold or repurposed after closure

Uncertain Resolves by End of 2027

Discussed by: San Jose planning officials; real estate observers

Once production stops, the 475 Eggo Way property becomes available. Its industrial zoning and location make redevelopment or a sale possible, but any deal would take months or years and would not restore waffle-making jobs.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

October 2009

Eggo Crisis of 2009

Two of the four Eggo plants in the U.S. shut down, triggering a national waffle shortage. San Jose was one of the two plants still running, producing at top speed to meet demand while stores rationed supplies.

Then

Empty freezer shelves for months; Kellogg said the shortage could linger into the next year.

Now

Exposed how concentrated Eggo production was, with so few plants carrying national output.

Why this matters now

Shows the San Jose plant's long role as a critical production site, and that Eggo manufacturing has been consolidating for years before Mars' move.

November 2012

Hostess Brands liquidation (2012)

Hostess filed for bankruptcy and shuttered all its plants after a labor dispute, putting roughly 18,500 workers out of work. Iconic brands like Twinkies and Ho Hos disappeared from store shelves overnight.

Then

The brands vanished for months, then were sold to new owners who restarted production at fewer plants.

Now

Showed that iconic American food brands can survive their original factories, with new ownership and a smaller footprint.

Why this matters now

A pattern for what happens when an iconic food brand changes hands: plants close, brands move to new owners, and production concentrates in fewer, larger sites.

February 2024

Rossville, Tennessee Eggo plant closure (2024)

Kellanova announced its Eggo plant in Rossville, Tennessee would close permanently, laying off 142 workers between June and November 2024. The WARN notice cited permanent and total plant closure.

Then

142 jobs lost; the local workforce development board took over retraining and placement.

Now

Eggo production consolidated to fewer sites before Mars even completed its buyout of Kellanova.

Why this matters now

The San Jose closure follows the same script, filed months after Kellanova shut another Eggo plant, showing a deliberate consolidation pattern.

Sources

(5)