Costco Turkey Sandwich

Home reconstruction

The deli turkey sandwich is enormous, and the reason it works rather than collapsing is the roll. It is a firm ciabatta-style bread with a real crust and a tight, chewy crumb — not a soft sub roll and not sliced bread.

Put the same filling in a soft roll and you have a wet mess within ten minutes. That is the whole problem with reproducing this one at home, and it is solved at the bakery counter rather than in the kitchen.

What the crumb has to do

Turkey breast, provolone, lettuce, tomato and a mayonnaise-based spread put a lot of moisture against the bread. A soft, open crumb absorbs it immediately and goes to paste.

A tight, chewy ciabatta crumb absorbs slowly. The crust acts as a barrier on the outside. Between the two, the sandwich survives being wrapped and carried, which is what it is designed for.

If you can only get soft rolls, toast the cut faces. It is not as good but it buys you a barrier where there was not one.

The order of assembly is the moisture strategy

This is the part worth being deliberate about:

1. Spread on both cut faces, edge to edge. Fat is waterproof. This is the real barrier and most people apply it in a stripe down the middle, which protects nothing.
2. Cheese directly onto the bottom spread. A second fat layer.
3. Turkey next, folded rather than laid flat.
4. Tomato in the middle of the pile, never touching bread. Tomato is the wettest thing in here.
5. Lettuce on top of the tomato, acting as a shield for the top slice.

Follow that and it holds for hours. Ignore it and it is soggy before you sit down.

Folding the turkey

Laid flat, sliced turkey compresses into a solid slab that eats like a single thick piece of meat. Folded loosely into ruffles, the same weight has air in it, sits higher, and comes apart properly when you bite.

It also makes the sandwich look like the one behind the counter, which is mostly what people are after.

What you need

• 1 large ciabatta loaf or 2 ciabatta rolls
• 450 g sliced roast turkey breast
• 6 slices provolone
• 4 tbsp mayonnaise
• 1 tbsp Dijon mustard
• 1 tsp lemon juice
• 1/4 tsp garlic powder
• 1/4 tsp black pepper
• 2 large tomatoes, sliced and patted dry
• a handful of romaine or iceberg, shredded
• 1/4 red onion, sliced very thin

Method

1. Mix the mayonnaise, Dijon, lemon juice, garlic powder and pepper.
2. Split the bread and spread the mixture right to the edges on both faces.
3. Pat the tomato slices dry with kitchen paper. They hold a surprising amount of free water and this step alone changes how long the sandwich lasts.
4. Provolone onto the bottom.
5. Turkey, folded into loose ruffles, piled high.
6. Onion, then tomato, then lettuce.
7. Top on, press down firmly, cut in half.

Salt the tomato, but not on the sandwich

Salting tomato draws water out — that is why it tastes better and why it must happen on a plate, ten minutes before, followed by patting dry. Salt it on the sandwich and the water it draws out goes straight into the bread.

Storing

Wrapped tightly, it holds four to six hours if you assembled it in that order. Overnight is pushing it — the lettuce wilts and the tomato wins eventually.

Do not freeze. Nothing about this survives it.