> ## 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.

# Tuna Salad Sandwich at Digger's Diner
- URL: https://onesandwich.com/concord-digger-s-diner-tuna-salad-sandwich/
- Published: 2026-10-06T23:26:03.000Z
- Updated: 2026-10-06T23:26:03.000Z
- Description: Fresh tuna salad, mayo, lettuce, tomatoes on toast. Sandwich Score 89, outstanding. 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.

Hoagie RollTomatoLettuceMayonnaiseTuna SaladHoagie Roll

**89**

Sandwich Score  
out of 100 · outstanding

Outstanding, and the road to 90 is open.

Reads as a fully realized tuna salad sandwich, six of six roles, most layers have a partner.

Balance

98

Harmony

90

Contrast

89

Structure

98

Focus

100

Composition

96

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.

**hoagie roll (inferred from the kind of place)**, served cold: fresh tuna salad; mayo; lettuce; tomatoes.

## Balance

salt1.1 · 56thacid1.2 · 79thfat2.5 · 64thsweet0.2 · 27thumami1.9 · 70thheat0.0bitter0.1 · 48th

__Flavor axes__
| Axis   | Value | Catalog percentile |
| ------ | ----- | ------------------ |
| salt   | 1.1   | 56th               |
| acid   | 1.2   | 79th               |
| fat    | 2.5   | 64th               |
| sweet  | 0.2   | 27th               |
| umami  | 1.9   | 70th               |
| heat   | 0.0   | n/a                |
| bitter | 0.1   | 48th               |

**98** 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    |
| --------------------------------------------- | ------- | --------------------------------------- | --------- |
| hoagie roll (inferred from the kind of place) | bread   | soft crusty                             | the frame |
| fresh tuna saladscored as Tuna Salad          | protein | umami 4 fat 3 salt 2 creamy soft        | **+12**   |
| mayoscored as Mayonnaise                      | sauce   | fat 5 acid 2 creamy saucy               | **+7**    |
| lettuce                                       | texture | crunchy juicy fresh                     | **+8**    |
| tomatoesscored as Tomato                      | texture | acid 3 umami 3 sweet 2 juicy soft fresh | **+13**   |

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

- **Tuna Salad + Lettuce**: cool crunch under rich tuna salad
- **Tuna Salad + Tomato**: tuna salad and tomato, the lunch-counter pair
- **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 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.