Case Studies / Kloster Kitchen

How Kloster Kitchen Achieved a 37.9X Return with WhatsApp

37.9x

ROWAS

83.5%

v

11.4%

Click Rate

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Written by Johannes Mansbart

CEO & Co-Founder, chatarmin.com

Last updated at: January 22, 2026

FMCG

Initial Situation

Kloster Kitchen, a successful German food brand best known for its ginger shots, regularly leverages WhatsApp to run seasonal promotions and campaigns efficiently. For Halloween, the team wanted to test how to maximize ROI by making smart use of the 24-hour conversation window.

Solution: WhatsApp Campaign with Chatarmin

With Chatarmin’s support, Kloster Kitchen launched a two-message campaign that made the most of Meta’s 24h conversation window:

Kloster Kitchen WhatsApp Marketing Case Study: 2-Teilige Halloween Kampagne

  • Two messages sent, but only paid for one 💡
  • Maximum reach through one of the highest open rates in the market.
  • Cost efficiency thanks to clever use of the 24h window. ## Results (Total)

Kloster Kitchen WhatsApp Marketing Case Study Results

  • 37.9X ROWAS 🚀
  • 83.5% open rate 📬
  • 11.4% click rate 🔗
  • €68.30 AOV 📦 ## Conclusion

Kloster Kitchen’s Halloween campaign demonstrates how WhatsApp can drive not only reach but also exceptional ROI. Through smart campaign setup, precise personalization, and clever use of the 24h conversation window, Kloster Kitchen managed to boost their Return on WhatsApp Spend to 37.9X.

👉 Want to learn how your brand can run WhatsApp campaigns with maximum ROI? Talk to our team