• California
  • San Mateo
  • 31st Union

31st Union

(650) 458-0049
  • 5 South Ellsworth Avenue, San Mateo, CA 94401
  • Grubhub.com
  • Menu
  • Snacks
    Served 5:00 - close Tuesday - Sunday.
    • Warm Marinated Olives $8

    • House-made Rosemary Potato Chips $3

    • Large House-made Focaccia Bread $5

    • Chips & Dip $8

      Rosemary potato chips, bacon and jalapeno dip.

    • House Cut Kennebec Fries Herbs, Sea Salt $8

  • Plates
    Saturday and Sunday 10:00am - 2:00pm.
    • Huevos Rancheros $20

      House-made Chorizo, Crispy Corn Tortillas, Refried Black Beans, Sunny Side Up Eggs, Fire-Roasted Salsa, Creme Fraiche

    • Buttermilk Sourdough Pancakes $15

      Whipped ricotta, bourbon maple syrup.

    • Braised Brisket Hash $22

      Sweet Potato, Pumpkin, Cipollini Onion, Kale

    • Fried Chicken $17

      Buttermilk biscuit, bacon gravyand a side salad.

    • 31st Union Burger $12

      Arugula, pickled onions, housemade aioli, housemade brioche bun.

    • Housemade Bacon Quiche $19

      Wood Fired Leeks, Highway One Fontina, Creme Fraiche Crust, Mixed Greens

    • The Union Plate $20

      Two eggs your way, toast or biscuit, fried herb yukon potatoes, bacon or fruit.

  • Snacks & Sides
    Tuesday - Friday 11:30am - 2:00pm.
    • House Cut Kennebec Fries $7

      Herbs, sea salt.

    • House-Made Rosemary Sea Salt Chips $3

    • Warm House-Made Herb Focaccia Bread $5

  • Salads
    Saturday and Sunday 10:00am - 2:00pm.
    • Side Baby Kale Salad $8

    • Side Quinoa Salad (GF) $8

    • Baby Kale Salad $15

      Grapes, Redwood Hill Feta, Toasted Hazelnuts, Wine-Poached Apple Vinaigrette

    • Quinoa Salad (GF) $15

      Arugula, roasted carrots, toasted almonds, lemon vinaigrette.

  • Soup & Salads
    Served 5:00 - close Tuesday - Sunday.
    • Seasonal Soup $9

    • Quinoa Salad (GF) $15

      Arugula, roasted carrots, fennel, toasted almonds, lemon vinaigrette.

  • Small Plates
    Served 5:00 - close Tuesday - Sunday.
    • Llano Secco Pulled Pork Sandwich $15

      Cabbage and Apple Slaw, Brioche Bun

    • Grilled Cheese Sandwich $13

      Roasted Cauliflower, Couscous, Min Salsa Verde

    • Mac-N-Cheese $13

      Highway one fontina cheese on Acme bread, tomato jam.

    • 31st Union Spicy Wings $11

      House-made Hot Sauce, Cilantro

    • Fried Chicken Sandwich $12

      Pickled Carrot & Jalapeno Slaw, Buttermilk Dressing on House-made Brioche Bun

    • Crispy Pork Belly Tacos (GF) $15

      Carrot and Kohlrabi Slaw, Nouc Cham Sauce

  • Sides
    Saturday and Sunday 10:00am - 2:00pm.
    • Seasonal Fruit $8

    • Fried Herb Yukon Potatoes $8

    • Toast & Housemade Jam $6

    • House Cured Bacon $7

    • Buttermilk Biscuit & Jam $7

    • Two Eggs $7

    • Kennebec House-Cut French Fries $7

    • Single Buttermilk Pancake $6

  • Sandwiches & Classics
    Tuesday - Friday 11:30am - 2:00pm.
    • Chips & Dip $8

      Rosemary sea salt chips and bacon and jalapeno dip.

    • Half Sandwich + Salad $14

      Pulled Pork or Seasonal Veggie + Side Salad

    • Seasonal Veggie Sandwich $11

      Housemade Focaccia Bread

    • Llano Seco Pulled Pork Sandwich $15

      Cabbage and Apple Slaw, Brioche Bun

    • Fried Chicken Sandwich $11

      Pickled carrot and jalapeño slaw, buttermilk dressing on grilled House-made Brioche bun .

    • 31st Union Burger $12

      Aioli, arugula, housemade pickles, and pickled onions on housemade Brioche Bun.

  • Pizza
    Served 5:00 - close Tuesday - Sunday.
    • Cheese Pizza $17

    • Pizza & Seasonal Toppings $20

  • Sweets
    Saturday and Sunday 10:00am - 2:00pm.
    • 1 Dozen 31st Union Guittard Chocolate Chip Cookies $44

    • 31st Union Guittard Chocolate Chip Cookie $3.5

  • Soup & Salads
    Tuesday - Friday 11:30am ? 2:00pm.
    • Large House-made Ficoccia Bread $5

    • Quinoa Salad (GF) $15

      Arugula, roasted carrots, fennel, toasted almonds, lemon vinaigrette.

    • Handcrafted Seasonal Soup $9

  • Sweets
    Served 5:00 - close Tuesday - Sunday.
    • 1 Dozen 31st Union Guittard Chocolate Chip Cookies $44

    • 31st Union Guittard Chocolate Chip Cookie $4

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