We all know that when two products come in contact, they retain microscopic traces of each other.
The entire science of forensics is based on this principle.
Where else could this be of use?
Scientists at the Australian National University checked the micro-remains of ancient grinding tools. Usually, a grinding tool has two components – both made of stone or another hard material that can be used to grind/crush. About twelve such tools were analysed. (Picture from the original paper below).
The archeological remains being analysed were found at the site of Oc-Eo in Southern Vietnam (see map).
A total of 717 starch grains were recovered from the surfaces of the 12 studied implements, of which 604 were identifiable to species. In addition to eight spices, traces of rice were also found.
They found microscopic traces of finger root, ginger, turmeric, clove, nutmeg, cinnamon, galangal, and other spices. (these names are based on estimates by the scientists, based on the size of the microscopic remains and their physical characteristics).
These micro-remains are thought to be about 2000 – 1300 years old.
What does this discovery mean?
The researchers are drawing the following conclusions from their findings:
A. The breakage pattern of the micro-remains indicates the creation of curry powder. Curry powder or curry, is a type of sauce or gravy that is thought to be native to India and originating in the Saraswati Indus Civilisation. The authors of the study are proposing that this finding indicates that India’s culinary (related to cooking) skills were exported to other Southeast Asian countries, including Vietnam.
B. This transfer of knowledge could be a result of cultural exchange or trade links between the two countries.
C. Since the same spices (and some of the grinding tools) are used in modern Vietnamese cooking also, we can surmise that this indicates a continuity in the cooking practices in Vietnam.
D. The presence of rice, according to them, means that a well-developed agricultural system formed the basis of the economy.
Why don’t we find more micro-traces?
Spices are bio-degradable. The second reason is poor preservation techniques. The third reason is that analysis of this kind requires money, resources, and expertise.
As the number of researchers in this niche domain increase, we might know more about the lives of our ancestors through these microscopic remains.
The original paper can be read here.
All images from the original paper. Featured image representative.