Hi, guys! This is a short story about where to buy baking soda in Thailand, in Bangkok and other Thai cities.
I had never had the necessity to get the baking soda (sodium bicarbonate) in Thailand until my gums got sore and, as it is known, gargling the mouth with baking soda dissolved in warm water is an effective treatment in such a situation. I visited three 7-eleven shops (in a small city called Prachuap) but they had no baking soda there (I used Google.Translate on my smartphone to explain to them what I needed).
One of 7-11 shop assistant recommended me to go to a Tesco Lotus. Alas, I found only a kind of expensive baking powder there. (I don't know if it is normal for Tesco... or I was just unlucky). I was disappointed and I gave up for a while.
But this is a story with a happy ending. Later in Bangkok, I found baking soda in Big C supermarket. The price was just 21 baht (a 300-gram pack).
Big C supermarkets can be found almost everywhere in Thailand e.g. in Bangkok, Phuket, Pattaya, Koh Samui, Krabi, Hua Hin, Chiang Mai, etc. So this is where you can buy baking soda in Thailand.
One more useful thing to mention: how to say baking soda in Thai?
One of the Thai names of baking soda is เบคกิ้งโซดา (written on the product you can see on the photo above) and you can read it as "backing soda" or just say in English "baking soda" slowly and clearly and the Thais will understand you.
For those who are in search of baking powder. The difference is that baking soda is 100% sodium bicarbonate and the baking powder is a mix of sodium bicarbonate with other baking substances. Tesco shops keep baking powder just beside to the baking soda, the same company but the package's label is colored in green - you can see it on the photo above on left.
The price of baking power is 35 baht in Tesco Lotus.
Baking powder in Thai is ผงฟู that can be spelled "pong fu" in English - "fu" should be read as in "kung fu" (Chinese martial arts).