Boil the spaghetti in salted boiling water.
Slice the garlic thinly.
Remove the skin from the marinated pollock roe and prepare only the inside.
Add olive oil to a pan and sauté the garlic over low heat.
Add the boiled pasta to the pan and pour in a bit of pasta water.
Add the mentaiko (marinated pollock roe) and quickly mix everything together.
Season with salt and pepper, then plate.
Garnish with parsley or other desired toppings to finish.