Step 1

In a large pot or skillet, combine the water and canned tomatoes and then add the spaghetti on top.

Step 2

Cover and bring to a gentle boil. Add half of the butter now and stir for a minute or two to ensure that all of the softening spaghetti is covered in liquid and doesn't stick together.

Step 3

Leave to simmer for about 10 additional minutes, checking and stirring the pasta regularly to make sure it's not sticking to the bottom of the pan. If it starts to get too dry before the spaghetti is cooked, add a little more water.

Step 4

Once the pasta is cooked, turn off the heat and add the remaining butter, fresh basil and balsamic vinegar. Stir until the butter is melted in.