Slice the garlic thinly.
Drain the oil from the canned tuna and prepare it.
Boil the spaghetti noodles.
Add olive oil and garlic to a pan and sauté over medium-low heat.
When the garlic turns golden, add the tuna and stir-fry.
Add the cooked noodles and a bit of pasta water, then mix.
Season with salt and pepper.
Transfer to a plate and serve.