I googled -
The "no meat" rule in Christianity, particularly regarding Fridays and the season of Lent, is primarily a
tradition of the Church rather than a direct command found in the Bible. While rooted in the remembrance of Jesus Christ's sacrifice on a Friday, the specific, binding, and widespread rule to abstain from meat is a, often misunderstood, practice of religious observance, primarily within the Roman Catholic, Eastern Orthodox, and some Protestant traditions.
When I make a blognese I only use a small amount of paste as the "meat" is the main meal which in my case was minced beef
onions , tomatoes,and red peppers and herbs ect