Mix the sugar, honey, and water in a medium-sized pan. You want a big enough pan for the mixture to expand once the baking soda is added so don't use a small pan.
Heat on medium high heat, stirring occasionally until mixture begins to boil.
Once the honey mixture is boiling, clip on the candy thermometer and reduce the heat to just keep it boiling. I cooked mine on medium heat. Boil until the candy reaches 300 degrees.
Once the mixture is at 300 degrees, remove from heat and whisk in the baking soda. Be careful as the mixture will bubble and expand. Mix the baking soda in well.
Pour the mixture into a greased or Silpat lined cookie sheet. Don't spread the mixture.
Let the candy cool until firm.
Once the candy is cool and firm, break into serving sized pieces and store in an airtight container.