Onion Sets - Stuttgarter A great onion with a sweet, mild taste! The Onion Sets - Stuttgarter is a true favourite of the UK. Amazingly, this onion variety can be planted earlier than most other onion varieties meaning you can enjoy these magnificent onions early! The Onion Sets - Stuttgarter is renowned for its delicious sweet taste and not sharp like other onions. The mild taste of this onion makes it perfect for subtly enhancing any dish you add it to. The Onion Sets - Stuttgarter stores very well too.