Tuna Niçoise Jar — Travel-Proof Lunch

Why this works for founders

Tuna gives you protein and omega-3, eggs give you choline, and the potatoes contribute resistant starch (especially if cooked the day before and refrigerated). Resistant starch feeds gut bacteria that produce butyrate, a short-chain fatty acid that affects the gut-brain axis. The whole thing fits in a glass jar and travels.

Ingredients (1 jar)

• 1 tin tuna in olive oil (drained)
• 2 hard-boiled eggs, halved
• 100g cooked baby potatoes, halved
• 80g green beans, blanched
• ¼ cup kalamata olives
• ¼ cup cherry tomatoes, halved
• 2 cups baby lettuce
• Dressing: 2 tbsp olive oil, 1 tbsp red wine vinegar, ½ tsp dijon, salt

Steps

1. Cook potatoes ahead: simmer 12 min, cool overnight in fridge.
2. Blanch green beans: 2 min in boiling water, then into ice water.
3. In a 1L jar, layer: dressing at bottom, potatoes, green beans, olives, tomatoes, tuna, eggs, lettuce on top.
4. Seal. Refrigerate up to 3 days.
5. To eat: tip into a bowl and toss.

Macros per serving (approx)

• Calories: 520
• Protein: 34g
• Fat: 28g
• Carbs: 36g

Founder note

If you fly often, this is your lunch. Glass jars are allowed in carry-on if the liquid (dressing) is less than 100ml. Just make the dressing volume small.

The deeper logic

Tinned tuna delivers 25 to 30 g of protein per standard tin (120 to
140 g), at roughly 1 dollar per serving for store brand and 4
dollars for premium Spanish conservas. The protein is complete; the
omega-3 content is modest for skipjack and substantial for albacore
(roughly 200 mg vs 800 mg per tin).

The mercury question: skipjack tuna (the small species typically
labeled "chunk light") is at the low-mercury end of canned tuna at
roughly 0.13 ppm; albacore (typically labeled "white") is roughly
3x higher at 0.35 ppm. Both are below the FDA threshold for adults
but adults consuming more than two servings per week should default
to skipjack.

Hard-boiled eggs are the choline density. The yolks contribute
roughly 150 mg per egg; two eggs in the jar push the lunch's choline
contribution into the meaningful range. Eggs at the bottom of the
jar (under the cold layers but above the dressing) hold for the
full three-day refrigerator life.

The potatoes contribute roughly 12 g of resistant starch after
cooking-and-cooling. Resistant starch is the substrate for butyrate-
producing colonic bacteria. The gut-brain axis is a noisy literature
but the resistant starch contribution to butyrate is well
characterized in human trials.

Why this travels

The jar is the only lunch format in the founder kit that has been
through TSA without compromise. Glass jar, sealed, refrigerated
when possible, eaten on the plane or at the destination. The
dressing volume (under 100 mL) keeps it within carry-on limits.

The use case is the founder week with a Tuesday-night flight to a
client meeting. Pack two jars Sunday; one for the airport before
boarding, one for the hotel the next day. The combined cost is
under 12 dollars; the alternative (airport sandwich, hotel room
service) runs 40 to 60 dollars and the macronutrient profile is
markedly worse.

Substitutions

• No tuna: tinned salmon (similar protein, more omega-3), or
  hard-boiled eggs as the sole protein. Boiled chicken breast
  works but does not travel as well — the chicken dries.
• No baby potatoes: boiled or roasted sweet potato cubes,
  cooked grains (farro, quinoa). The resistant starch argument is
  strongest with cooled potato or rice.
• No green beans: asparagus, snap peas, or wax beans. All
  blanch the same way.
• No olives: capers, pickled onions, or thinly sliced fennel.

Storage detail

Sealed jars hold three days refrigerated. The eggs and tuna are
the bottleneck — both are at the edge of food-safe time by day
four. Throw out any jar that has been opened and partially
consumed; do not reseal and store overnight.

The dressing at the bottom of the jar separates within hours of
making. The shake-to-coat motion immediately before eating
re-emulsifies. If you prefer the dressing in a separate small
container, that is also fine — fewer logistics, slightly more
mess at lunch.

Common mistakes

• Using flaked tuna packed in water. The flavor is thin and the
  jar reads dry. Buy tuna in olive oil; the oil contributes to
  the dressing.
• Over-cooking the eggs. 9 to 10 minutes in boiling water,
  immediately into ice water, gives you a yolk that is fully
  set but still bright yellow — not the grey-green of an
  overcooked egg. The grey-green is sulfur oxidation; it is
  cosmetic, not unsafe, but signals the egg has been pushed.
• Skipping the cold-shock for the green beans. Without it, the
  beans cook through to dull army-green by day two. The 60-second
  ice bath stops the cooking and locks the color.

The jar is the most operationally-sound founder travel lunch.
Pack two; protect the next two airport meals; the entire trip's
nutrition baseline holds.