Foodies love to talk about how their grub feels. Is it smooth or crunchy? Wet or dry? Codekey Cookies adds a whole new level to this debate: its treats are adorned with Braille writing.

The brainchild of Jennifer Wong Ming-wai, a hypnotherapist and psychotherapist, and the aptly named Bread Pang, a cha chaan teng owner, both of whom are blind, the cookies are designed to raise awareness of the visually impaired in Hong Kong.

"We experience a lot of stigma and labels," Wong says.

The handmade cookies - "fun, edible and meaningful" - come in boxes of 12 and each is topped with a Braille letter. Since they launched in April, Wong says, some 600 boxes have been sold.

She and Pang personally deliver their creations at MTR stations across the city. Customers "never think it will be a blind person coming", Wong says. Some have even apologised for inconveniencing a visually impaired person. To which Wong says, 'That's totally fine. We're mobile. We can't see but we can walk.'"

In the run-up to September's Mid-Autumn Festival, Wong and Pang will be selling mooncakes, each with the character " dim" - which means "Braille" in Cantonese - inscribed on its surface.

"The mooncakes will be baked the day before" the scheduled pick-up date, Wong says.

Personalised Braille inscriptions can be made to order on the cookies and mooncakes, which come with an instruction guide to help seeing customers decode the writing.

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