I noticed that someone recently found this blog with the keyword search "calories in bhutaneese suja " ( sic) . I am sure anyone who has had a cup and seen the way that a shiny layer of oil sits on top of the tea has probably wondered the same thing. I have an answer of sorts.
The wonderful K2 weekend magazine ( hands down one of the most consistently interesting and well-written publications in Bhutan) that come with the Kuensel on Saturday recently did a really great issue on tea . They included an interview with a local nutritionist Laigden Dzed asking just that question. Sadly suja fan are not going to like the answer. He advises that anything more than one cup of suja once a month is too much! He notes that a single teaspoon of butter has 45 calories and to put it mildly the average cup of suja has many a teaspoon of butter!