I Compared The Costco Shamrock Shake "Dupe" To McDonald's — Here Are My Honest Thoughts

Published: Mar 4, 2026 10:16 PM • Updated: Mar 5, 2026 1:18 AM • Original source

Images

1 / 15

2 / 15

3 / 15

4 / 15

5 / 15

6 / 15

7 / 15

8 / 15

9 / 15

10 / 15

11 / 15

12 / 15

13 / 15

14 / 15

15 / 15

Is the Shamrock lineup getting upstaged? I'm here to find out.

As a Tasty contributor, I cover food and lifestyle stories focused on grocery shopping, store finds, taste tests, budgeting, and realistic cooking for suburban life.