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# Sourdough Veggie at Digger's Diner
- URL: https://onesandwich.com/concord-digger-s-diner-sourdough-veggie/
- Published: 2026-10-06T23:25:33.000Z
- Updated: 2026-10-06T23:25:33.000Z
- Description: Grilled mushrooms, onions, bell peppers, tomatoes, swiss cheese on sourdough. Sandwich Score 64, very good. At Digger's Diner, Concord.
- Author: Andrew Lekashman
- Tags: USA, California, #shop-sandwich, #auto-imported

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

SourdoughSwiss CheeseTomatoBell PepperOnionSourdough

**64**

Sandwich Score  
out of 100 · very good

Very good, with one move worth +22.

Leans toward a veggie panini, five of six roles, half the layers have no partner.

**Holding the summit:** a finished composition

Balance

93

Harmony

67

Contrast

95

Structure

96

Focus

96

Composition

53

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.

**sourdough**, toasted: grilled mushrooms; onions; bell peppers; tomatoes; swiss cheese.

## Balance

salt0.9 · 47thacid0.6 · 55thfat1.1 · 16thsweet0.7 · 77thumami1.6 · 53rdheat0.1 · 57thbitter0.1 · 51st

__Flavor axes__
| Axis   | Value | Catalog percentile |
| ------ | ----- | ------------------ |
| salt   | 0.9   | 47th               |
| acid   | 0.6   | 55th               |
| fat    | 1.1   | 16th               |
| sweet  | 0.7   | 77th               |
| umami  | 1.6   | 53rd               |
| heat   | 0.1   | 57th               |
| bitter | 0.1   | 51st               |

**93** 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     |
| --------------------------------- | ------- | --------------------------------------- | ---------- |
| sourdough                         | bread   | soft chewy crusty                       | the frame  |
| grilled mushrooms                 |         |                                         | not scored |
| onionsscored as Onion             | texture | sweet 2 crunchy juicy fresh             | **+3**     |
| bell peppersscored as Bell Pepper | bulk    | crunchy juicy fresh                     | **+4**     |
| tomatoesscored as Tomato          | texture | acid 3 umami 3 sweet 2 juicy soft fresh | **+9**     |
| swiss cheese                      | protein | fat 3 umami 3 salt 2 soft melty         | **+15**    |

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

- **Onion + Bell Pepper**: peppers and onions, the griddle pair

[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.