> ## Content Index
> Fetch the complete content index at: https://onesandwich.com/llms.txt
> Use this file to discover other available public pages before exploring further.

# Mushroom Swiss Burger at Digger's Diner
- URL: https://onesandwich.com/concord-digger-s-diner-mushroom-swiss-burger/
- Published: 2026-10-06T23:25:14.000Z
- Updated: 2026-10-06T23:25:14.000Z
- Description: 1/3 lb beef patty, freshly grilled mushrooms, swiss cheese on grilled bun. Sandwich Score 56, solid. At Digger's Diner, Concord.
- Author: Andrew Lekashman
- Tags: USA, California, #shop-sandwich, #auto-imported

A burger at [Digger's Diner](https://onesandwich.com/concord-digger-s-diner/), a restaurant in Concord, California.

Burger BunSwiss CheeseBeefBurger Bun

**56**

Sandwich Score  
out of 100 · solid

Solid, with one move worth +31.

Leans toward a roast beef, two of six roles, half the layers have no partner.

**Holding the summit:** a finished composition, a third role on the board (an acid, a sauce, an aroma or a crunch)

Balance

68

Harmony

85

Contrast

68

Structure

82

Focus

100

Composition

41

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.

**grilled bun**, toasted: 1/3 lb beef patty; freshly grilled mushrooms; swiss cheese.

## Balance

salt1.4 · 69thacid0.0fat2.6 · 67thsweet0.4 · 50thumami2.4 · 87thheat0.0bitter0.0

__Flavor axes__
| Axis   | Value | Catalog percentile |
| ------ | ----- | ------------------ |
| salt   | 1.4   | 69th               |
| acid   | 0.0   | n/a                |
| fat    | 2.6   | 67th               |
| sweet  | 0.4   | 50th               |
| umami  | 2.4   | 87th               |
| heat   | 0.0   | n/a                |
| bitter | 0.0   | n/a                |

**68** 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     |
| ------------------------------- | ------- | -------------------------------- | ---------- |
| grilled bunscored as Burger Bun | bread   | sweet 2 soft springy             | the frame  |
| 1/3 lb beef pattyscored as Beef | protein | fat 3 umami 3 juicy chewy tender | **+11**    |
| freshly grilled mushrooms       |         |                                  | not scored |
| swiss cheese                    | protein | fat 3 umami 3 salt 2 soft melty  | **+10**    |

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 + Swiss Cheese**: roast beef and swiss, the deli melt

[All the sandwiches at Digger's Diner](https://onesandwich.com/concord-digger-s-diner/) · [The menu this was read from](https://www.diggersconcord.com/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.