I’ve been searching for their seeds for quite some time and finally I found an online local seller who sell it. It is best eaten raw as ‘ulam’ with ‘sambal belacan’
Here is some info about these tiny eggplants taken from myfolia.com
Thai lavender frog egg is a variety of eggplant which is a member of the Solanum family. Its botanical name is Solanum melongena ‘Thai lavender frog egg’.
Native to central Thailand, these eggplant fruits are the size of cherry tomatoes.
This variety is a vegetable that typically grows as an Annual/Perennial, which is defined as a plant that can matures and completes its life cycle over the course of one year or more.
Thailand is believed to be where Thai lavender frog egg originates from.