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# Tuna Melt at Digger's Diner
- URL: https://onesandwich.com/concord-digger-s-diner-tuna-melt/
- Published: 2026-10-06T23:25:58.000Z
- Updated: 2026-10-06T23:25:58.000Z
- Description: Grilled tuna salad, american cheese on choice of bread. Sandwich Score 42, rough. 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.

White BreadAmerican CheeseTuna SaladWhite Bread

**42**

Sandwich Score  
out of 100 · rough

Rough, with one move worth +35.

Uncharted, two of six roles, few layers have a partner.

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

Balance

76

Harmony

30

Contrast

55

Structure

84

Focus

100

Composition

25

Quality

75

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.

**white bread (the menu offers a choice of bread; scored on this one)**, toasted: grilled tuna salad; american cheese (low tier).

## Balance

salt2.0 · 88thacid0.4 · 42ndfat2.8 · 74thsweet0.4 · 50thumami2.4 · 87thheat0.0bitter0.0

__Flavor axes__
| Axis   | Value | Catalog percentile |
| ------ | ----- | ------------------ |
| salt   | 2.0   | 88th               |
| acid   | 0.4   | 42nd               |
| fat    | 2.8   | 74th               |
| sweet  | 0.4   | 50th               |
| umami  | 2.4   | 87th               |
| heat   | 0.0   | n/a                |
| bitter | 0.0   | n/a                |

**76** 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    |
| ------------------------------------------------------------------- | ------- | --------------------------------------- | --------- |
| white bread (the menu offers a choice of bread; scored on this one) | bread   | soft                                    | the frame |
| grilled tuna saladscored as Tuna Salad                              | protein | umami 4 fat 3 salt 2 creamy soft        | **+1**    |
| american cheese (low tier)                                          | protein | fat 4 salt 3 umami 2 gooey creamy melty | **+1**    |

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.

[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.