Line a 9-inch (23 cm) square baking pan or baking sheet with parchment paper. This is for the honeycomb, which will be very hot, so make sure it’s on a heatproof surface in case of spills.
Next, take a large saucepan (the honeycomb mixture will froth up a lot, so choose a pan larger than you think) and add the golden syrup. Place over gentle heat for about 1 minute, or until the syrup becomes very runny.
Add the sugar and bring to a boil, swirling the pan to stop it from burning (don’t stir). Once boiling, continue to cook for 3 minutes, swirling often to prevent it from burning. Do time it, and don’t guess.
Remove from the heat and add the baking soda (bicarb of soda). Stir quickly and confidently – you don’t want to overmix it, but you do want it completely dissolved. Take care; it will really froth up.
Pour into the prepared pan and leave for about 1 hour, or until set. Don’t touch it at all during this time, as it will be VERY hot. See the tips for how to clean your pan right away!
Once the honeycomb has completely cooled, roughly chop into small-ish pieces.
Next, line a 9x5-inch (2 lb) loaf pan with plastic wrap, making sure you have enough overhanging the sides. Set aside.
Pour the cream into a large mixing bowl and, using an electric mixer, whisk until you have soft peaks.
Add the sweetened condensed milk and whisk again until thickened.
Fold in the homemade honeycomb chunks until evenly distributed throughout.
Pour into the prepared loaf pan and smooth over the top using a spatula. Cover with plastic wrap and freeze for at least 6 hours.
Remove from the freezer 5 minutes before serving. Enjoy!