01 - Heat a dry skillet over medium heat. Add the black sesame seeds and toast for 3-4 minutes, stirring constantly until fragrant. Remove from heat and let cool completely.
02 - Grind the cooled seeds in a food processor or spice grinder until fine powder forms. Add honey and neutral oil, blending until smooth paste develops. Set aside.
03 - Combine milk, heavy cream, and half the sugar in a medium saucepan. Heat over medium until just steaming, avoiding boiling.
04 - Whisk egg yolks with remaining sugar and salt in a separate bowl until mixture becomes pale and thickened.
05 - Gradually pour the hot dairy mixture into the yolks while whisking constantly to prevent curdling.
06 - Return mixture to saucepan. Cook over low heat, stirring continuously with a wooden spoon until slightly thickened and coating the back of the spoon (approximately 175°F).
07 - Remove from heat. Stir in the prepared black sesame paste and vanilla extract until completely smooth and fully incorporated.
08 - Pour custard through a fine mesh sieve into a clean bowl. Cool to room temperature, then cover and refrigerate for at least 4 hours until thoroughly chilled.
09 - Process the chilled mixture in an ice cream maker according to the manufacturer's instructions until soft-serve consistency forms.
10 - Transfer churned ice cream to a freezer-safe container. Cover and freeze for at least 2 hours until firm enough to scoop.