Syrup Base: In a non-stick pan, combine the sugar, lemon juice, and honey.
Flavor: Add the finely chopped orange zest (ensure you only use the colored part of the skin to avoid bitterness).
Boil: Bring the mixture to a boil without stirring. Watch closely; as soon as the mixture begins to darken into a light amber, proceed to the next step.
Combine: Pour in all the sesame seeds at once. Stir vigorously with a wooden spoon for about 1 minute until a cohesive "dough" forms.
Flatten: Carefully pour the hot mixture onto a sheet of parchment paper. Top with a second sheet of paper and use a rolling pin to flatten it to a thickness of 3–4 mm.
Shape: While still slightly warm but set, trim any irregular edges. Use a sharp knife to cut the sheet into 8 cm x 4 cm bars.
Set: Allow the bars to cool completely until hard and crunchy before serving.