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# Mushroom Burger at North Park Deli
- URL: https://onesandwich.com/concord-north-park-deli-mushroom-burger/
- Published: 2026-10-06T23:27:27.000Z
- Updated: 2026-10-06T23:27:27.000Z
- Description: 1/3 lb. beef patty, mushrooms, swiss cheese, mayo, lettuce, tomato, onions on Burger Bun. Sandwich Score 89, outstanding. At North Park Deli, Concord.
- Author: Andrew Lekashman
- Tags: USA, California, #shop-sandwich, #auto-imported

A burger at [North Park Deli](https://onesandwich.com/concord-north-park-deli/), a deli in Concord, California.

Burger BunOnionTomatoLettuceMayonnaiseSwiss CheeseMushroomBeefBurger Bun

**89**

Sandwich Score  
out of 100 · outstanding

Outstanding, and the road to 90 is open.

Reads as a fully realized roast beef, six of six roles on the board.

Balance

90

Harmony

100

Contrast

100

Structure

98

Focus

100

Composition

100

Quality

100

Envelope

100

Each bar is one pillar of the score, 0 to 100\. The tick marks what a sandwich at the summit needs; an amber bar is the one holding this sandwich back.

**burger bun (inferred from the kind of sandwich)**, toasted: 1/3 lb. beef patty; mushrooms; swiss cheese; mayo; lettuce; tomato; onions.

## Balance

salt1.1 · 56thacid0.6 · 54thfat2.2 · 54thsweet0.4 · 57thumami1.9 · 68thheat0.1 · 49thbitter0.1 · 52nd

__Flavor axes__
| Axis   | Value | Catalog percentile |
| ------ | ----- | ------------------ |
| salt   | 1.1   | 56th               |
| acid   | 0.6   | 54th               |
| fat    | 2.2   | 54th               |
| sweet  | 0.4   | 57th               |
| umami  | 1.9   | 68th               |
| heat   | 0.1   | 49th               |
| bitter | 0.1   | 52nd               |

**90** Balance, out of 100

The seven flavor axes of the whole sandwich, each summed across its layers. The shaded ring is the catalog's middle 80%; the small number under each axis is where this sandwich falls in the catalog. A shape that sits inside the ring is in the range most sandwiches live in; a spike past it is where this one stands apart.

## What each layer brings

| Layer                                           | Role    | Flavor and texture                      | Points    |
| ----------------------------------------------- | ------- | --------------------------------------- | --------- |
| burger bun (inferred from the kind of sandwich) | bread   | sweet 2 soft springy                    | the frame |
| 1/3 lb. beef pattyscored as Beef                | protein | fat 3 umami 3 juicy chewy tender        | **0**     |
| mushroomsscored as Mushroom                     | bulk    | umami 2 soft springy juicy              | **0**     |
| swiss cheese                                    | protein | fat 3 umami 3 salt 2 soft melty         | **0**     |
| mayoscored as Mayonnaise                        | sauce   | fat 5 acid 2 creamy saucy               | **+2**    |
| lettuce                                         | texture | crunchy juicy fresh                     | **0**     |
| tomato                                          | texture | acid 3 umami 3 sweet 2 juicy soft fresh | **+6**    |
| onionsscored as Onion                           | texture | sweet 2 crunchy juicy fresh             | **0**     |

Points: what the Sandwich Score would lose if that one layer were left out, everything else the same. A negative number means the sandwich scores higher without it. Flavor runs 0 to 5 on each axis.

## Pairings

- **Beef + Mushroom**: beef and mushroom, the steakhouse pair
- **Beef + Swiss Cheese**: roast beef and swiss, the deli melt
- **Beef + Onion**: onions sweeten seared beef, philly style
- **Mushroom + Swiss Cheese**: melted alpine over browned mushroom
- **Mushroom + Onion**: the saute pair: mushroom and onion
- **Mayonnaise + Tomato**: summer tomato sandwich: acid on rich

## How to raise it

- Outstanding, not legendary: the menu does not name its bread.

[All the sandwiches at North Park Deli](https://onesandwich.com/concord-north-park-deli/) · [The menu this was read from](https://northparkdeli.com/breakfast-lunch-menus/?ref=onesandwich.com) · [Build your own in the Sandwich Builder](https://onesandwich.com/builder/)

Menu read 2026-09; items and prices change. The score is the site's opinion of the recipe as listed, not a review of the shop; tiers and house-made marks follow the menu's own wording.