I am looking to bottle my father-in-law's peri peri sauce and sell it at markets. The ingredients consist of fresh and dried herbs, garlic, salt, lemons and oil (sunflower, canola and olive). This is the method I used with him in the past and make to make sure it's food safe to do so. The batch is brought to a boil and simmered for 5 mins. It's left to cool and then bottled. The bottles are sterilized in hot boiling water for 5 minutes, left to dry (5-10 minutes) before adding the sauce. The caps (plastic) are also sterilized in hot water. Nothing else is done prior to storing them in the fridge, as they are perishable.
Is this a safe practice?