What fruit works best for tanghulu?
Firm, not-too-juicy fruit is your best friend. Most reliable: whole strawberries (very well dried) and whole green grapes. Blueberries can work, but they are small and slippery, so skewer carefully.
Higher-risk fruit: kiwi chunks, pineapple, and mandarin segments have cut faces and tend to weep, which can soften the shell faster. If you use them, cut bigger pieces, pat them aggressively dry, and plan to eat immediately.
Do I need a candy thermometer?
No. Use the cold-water test: drip a little syrup into a glass of ice water. If it turns into hard, brittle threads that snap between your fingers, you are at hard-crack and ready to dip. Timing varies wildly, so trust the test, not the clock.
Why did my coating turn sticky?
Usually one of three things: the fruit was not fully dry, the syrup did not reach hard-crack, or the finished tanghulu sat in humidity. Dry fruit thoroughly, do the cold-water test every time, and eat it while it is still showing off.
Why did my syrup turn grainy or crystallize?
Crystals happen when stray sugar on the pan sides gets dragged back into the syrup. Once the sugar dissolves, stop stirring. If you see crystals on the sides, use a wet pastry brush to gently wash them down. Corn syrup also helps keep things smooth.
Can I make it less spicy?
Absolutely. Cut the cayenne, use only smoked paprika, or swap in mild chili powder. You can also leave the spice out entirely and keep the technique.
Is it safe to dip fruit in super hot syrup?
Yes, with caution. The syrup is extremely hot and sticky. Keep kids and pets at a distance during dipping, use long skewers, and set everything up before you start cooking the sugar.