A small lift in how many coffee orders also include something to eat can add up quietly — this sizes whether it's worth the effort of going after.
Worth saying up front: this isn't about pressuring anyone into buying something they don't want. Attach rate usually comes down to whether the food offer is visible, appealing, and easy to say yes to at the point of order — not how hard anyone's upselling. This is here to size whether chasing a small, realistic lift is even worth it, not to hand you a script.
Step 1
Your current attach rate
Rough numbers are fine — this doesn't need to be exact.
Roughly what share of drink orders also include a food item. A rough guess is fine — even "about 1 in 5" works (20%).
£
Roughly what's left after ingredients on a typical pastry or sandwich.
Your current weekly food profit
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Now — what would a small lift actually be worth?
Step 2
What a small lift could be worth
Try a realistic uplift and see what it's worth in pounds, not just percentage points.
+5 percentage points
No change+20pp
New attach rate
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New weekly food profit
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Annual gain
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Current weekly food profit vs. with the lift
This is one lever, one estimate.
It assumes the uplift is genuinely achievable — that depends on the food offer itself, how it's displayed, and whether staff are set up to mention it naturally, not on effort alone.
Doesn't include any cost of training, menu changes, or new signage
Assumes extra food items don't need extra hands to serve them
One lever — pricing and menu mix often sit alongside this one
If that annual figure looks worth having, the next question is what it would actually take to get there.