Souffles and lava cakes are similar in many ways but they vary greatly in texture. Chocolate lava cakes have a runny and chocolatey center whereas souffles are completely cooked on the inside.  I have heard rumblings about chocolate lave cakes not being safe to eat because they aren’t cooked all the way through. Even though the center of the cake is still liquid, the internal temperature reaches 160 degrees making it totally safe to consume and delicious too!