Official ESN Partner

For everyone,
for every moment.

Your new city is chaotic. Your drink doesn’t have to be. Rotterdam’s modern tea bar built for student life.

Signature Drinks ESN Discount
✨ First days in a new city 📚 Last-minute deadlines ☔ Rainy commutes 🎉 Spontaneous hangouts 💆‍♀️ Calm breaks ✨ First days in a new city 📚 Last-minute deadlines

40+ Drinks

Not just bubble tea.

Who We Are

More than just a shop. A system.

OneSip serves a next-generation menu that goes beyond "traditional bubble tea." We offer milk tea classics, real matcha creations, fresh fruit teas, and fusion coffee.

We are founded by science + engineering students. We treat drinks the way product people treat products: test, standardize, optimize.

  • Quick when you're busy

    Fast workflows for student rush hours.

  • Reliable & Consistent

    Smart machines mean the same great taste, every time.

Why We Use Smart Machines

It's not a gimmick. It's for better value.

Consistency

Your favorite drink tastes exactly right, cup after cup. No guessing.

Speed

Between lectures? Our workflow minimizes wait times.

Huge Choice

40+ items. Matcha, Milk Tea, Fruit Tea, Specials. Never boring.

Hot

From €3.9

Efficiency means lower prices for you. Truly student-friendly.

OneSip x ESN Rotterdam

Official Partner

Welcome to ESN! We’re an official ESN partner, and we’d love to treat you with 10% off at OneSip 💚

To get the discount, please remember to do this first:

1 Fill in the voucher form

Leave your email so we can send you your voucher code.

✅ Important:

The email you enter in the form must be the same email you use to register in our OneSip mini ordering app (mini application).

“If you’re not sure which email you used, register in the mini app first, then submit the form with the same email.”

This is how we match your voucher to your account smoothly.

2 Redeem in the mini app (required)

The ESN 10% discount can be applied only for orders placed through our OneSip mini ordering app (QR ordering).

This keeps everything fast, fair, and consistent — especially during busy hours.

Steps (takes 1 minute):

  1. 1. Fill in the form (use same email as mini app account)
  2. 2. Wait for email confirmation
  3. 3. Order via OneSip mini app (scan QR in store)
  4. 4. Once we receive your email, the discount is automatically sent to your account 🎉
No spam — voucher first, and you only get updates if you choose to opt in.
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Special Group Pricing Available

🎉 ESN Events & Group Orders

Planning a Welcome Week event, committee meeting, study session, or social? We can help! We offer group orders + scheduled pickup, and we also have special group pricing for ESN events / bulk orders.

info@onesip.nl
DM us @onesiprotterdam

Tell us your date, group size, and preferred drinks, and we’ll suggest a menu + quote.