Turn the heat to low heat and simmer for 10 minutes stirring occasionally and add the salt.
Remove the saucepan from the heat and with the help of a hand mixer (ideally a powerful one of at least 450 watt) mix it all well until perfectly combined.
Notes
If you are not going to consume it immediately, pour the tomato sauce into a jar, seal and store in the fridge. You can keep it in the fridge for up to 4 days
Recipe by Tasty Mediterraneo at https://www.tastymediterraneo.com/tomato-red-pepper-sauce/