I often want to know if some food items are sweet. I use this question, but no one understands me despite getting the tones

correct:

อันนี้หวานใหมม

What I really want to know is if the food item is sweet or salty. Perhaps someone can help me? Thank you!

I suggest you ask it this way instead so they may understand you better.

อันนี้รสชาติหวานไหม

By adding the word รสชาติ (pronounced "rot chat"), they'll know you mean if it taste sweet.

I suggest you ask it this way instead so they may understand you better.

อันนี้รสชาติหวานไหม

By adding the word รสชาติ (pronounced "rot chat"), they'll know you mean if it taste sweet.

Thank you, thank you, thank you...worked like a charm to add "rot chat"! So cool. much appreciated.