Here is the idea I came up with, based on your requests: a new and original abstract flame, with an "S" found within it. This way, your brand will maintain it's same overall feel and aesthetic that makes it popular and well-known, while still being it's own independent icon that will not infringe on the old one.
Hi! Thank you for your designs. We really like the color of entry #27--the deep red is very luxurious and definitely draws the eye. We feel that the logo itself is cluttered, and we are looking for something more simple. I think we would also like "sauces" to be on the same line as "siam society", with the Thai script below: สยามสมาคมอาหารไทย