Sardine Sandwich

Ingredients

• 113 g (4 oz)Canned sardines
• 1Scallion, sliced
• 30 ml (2 tbsp)Cilantro, chopped
• 22.5 ml (1.5 tbsp)Mayonnaise
• 2.5 ml (0.5 tsp)Dijon mustard
• 6 slicesSourdough bread
• 3 leavesIceberg lettuce

Instructions

1. 1

   Mix the filling

   Drain the sardines and place them in a large mixing bowl. Add the sliced scallion, chopped cilantro, mayonnaise and Dijon mustard, then mix to combine.

2. 2

   Toast and assemble

   Toast the sourdough. Divide the sardine mixture evenly among 3 slices, top each with a lettuce leaf and another slice of sourdough, and serve straight away.

What is a sardine sandwich?

Sardine sandwiches are a straightforward American lunch built around tinned fish, bread and a few punchy additions. Their old-fashioned appeal comes from making a satisfying meal with pantry staples.

Here, mayonnaise softens the sardines while Dijon and scallion bring sharpness, and cilantro adds a fresh herbal note. Toasted sourdough and crisp lettuce give the filling a sturdier, more contrasting setting.

Nutrition and macros by portion

The nutrition label shows one serving as written: 1080 calories, 46g protein, 123g carbs, 43g fat.

Most of the carbohydrates come from the six slices of sourdough, while mayonnaise contributes much of the added fat and sardines provide protein and fat. The scallion, cilantro and lettuce add freshness and crunch; balance the meal with a salad or other vegetables alongside.

Why these ingredients work

Sardines: Drain them well so the filling stays creamy rather than watery. Mash or break them up as you mix if you prefer a more cohesive spread.

Sourdough: Its tangy flavour stands up to the rich, briny fish. Toasting also gives the bread enough structure for the moist filling.

Mixing the filling

Creamy base: Stir the mayonnaise and Dijon through the sardines until they are evenly coated. Fold in the scallion and cilantro so their flavour stays distributed throughout.

Texture: Mix gently for a chunky filling, or break the fish down further for a smoother sandwich spread.

Getting the texture right

Toast: Aim for bread that is lightly crisp at the edges but still easy to bite through. Very dark toast can overpower the delicate fish.

Lettuce: Put a leaf between the filling and the top slice to add crunch and help keep the bread from getting soggy.

Timing and assembly

This is a five-minute assembly, so toast the bread while you mix the filling. Drain the sardines first to keep the process quick and the mixture at the right consistency.

The quantities make three assembled sandwiches according to the method. Divide the filling and lettuce evenly among them, then serve as soon as they are assembled.

What to serve alongside

A simple green salad or sliced tomatoes make a fresh side without competing with the savoury filling. For a heartier lunch, add a bowl of soup or a piece of fruit.

If serving all three sandwiches as a meal, consider sharing them or pairing them with lighter sides to balance the substantial amount of bread.

Recipe notes & tips

• Drain the sardines thoroughly before mixing so the filling does not become loose.
• Taste the filling before assembling and adjust the mustard to suit your preference.
• Use fresh, crisp iceberg leaves for the best contrast with the soft filling.
• Toast the bread just before serving to preserve its crunch.
• Divide the mixture evenly among the three bottom slices for consistent sandwiches.

Variations

• Add lemon: Mix in a little finely grated lemon zest for a bright citrus note.
• Use parsley: Swap the cilantro for chopped parsley for a milder herbal flavour.
• Add pickles: Fold in finely chopped dill pickles for extra tang and crunch.
• Bring the heat: Stir a pinch of chilli flakes into the sardine mixture.
• Choose another bread: Use toasted rye or wholemeal bread in place of sourdough.

Common mistakes to avoid

• Skipping the draining: Excess liquid can make the filling runny; drain the sardines well first.
• Overmixing the fish: The mixture can lose its texture; stir gently if you want distinct pieces.
• Using untoasted bread: Soft bread may collapse under the filling; toast it before assembling.
• Adding soggy lettuce: Wet leaves can soften the bread; dry the lettuce before use.
• Assembling too early: The toast loses its crunch as it sits; build the sandwiches just before serving.

How to store

Keep leftover sardine filling covered in the refrigerator and use within 1 day. Store it separately from the bread and lettuce, then toast fresh bread and assemble just before eating; reheating is not necessary.

Frequently asked questions