Our TET symbol is inspired by a hieroglyph, found by Hermann Bahlsen whilst travelling in Egypt. It is a promise of the quality and care that you will find in everything we bake.. A Proud Family Business Since 1889. Crafted with Care. Every Biscuit We Bake is a Little Moment Just for You. A Crisp Biscuit, Perfectly Placed into a Generous Tablet of Milk Chocolate. The Bahlsen Family. Bahlsen.