help with espresso shot

[safe cave]

why is it like this? why the crema is only at the end?

[smoky granite]

Coffee could be old

Are you using a single wall or dual wall basket?

[safe cave]

single

[smoky granite]

How does it taste?

[safe cave]

a bit too bitter.

if i remember correctly

its dark roast

[smoky granite]

Try decreasing the yield or grind slightly coarser

[safe cave]

ok, i will 😌❤️ 🙏

[smoky granite]

May even improve crema by grinding slightly coarser; all things considered, your crema doesn't look that bad.

[safe cave]

i though the crema should appear thru out the shot, not only on the end.

[smoky granite]

The beans are probably old and have less co2 left

[safe cave]

i see, they are kinda old

other than that the shot looks ok?

[smoky granite]

If you want it less bitter, trying grinding coarser or decreasing the yield.