Finely chop 1 small onion.

Mince 1 garlic clove.

Chop 10 olives.

Mash 1 boiled egg.

1 can of tuna (drained)

1 tbsp capers

The chopped onion, garlic, olives and mashed egg.

2 tbsps yoghurt

1 tbsp mayonnaise

1 tbsp mustard

Season with salt and black pepper to taste.

Add the zest and juice of 1 lemon.

Drizzle with olive oil.

Mix all ingredients until well combined.

Thinly slice 1 cucumber into rounds.

Spread the tuna mixture evenly onto 4 slices of bread (your choice).

Top each sandwich with the cucumber slices, layering them to cover the mixture.

Serve the sandwiches immediately.