Sun dry pili nuts for half a day. Combine butter and baking soda. Brush some of the mixture on a clean marble slab.
Reserve the rest for use later. Set marble slab aside. In a large frying pan over low fire, deep fry nuts in oil until slightly yellow. Add sugar and continue frying until nuts are yellow brown.
Add syrup and continue frying until nuts are medium - dark brown. Remove nuts from oil and spread out on marble slab. Brush nuts with reserved butter mixture.
When nuts are slightly cool but still warm, divide into portions. Seal in a plastic bag and store in a jar.