Other option: Yellow brain (Tremella mesenterica) which grows on deciduous wood. We thought this stump was coniferous.

Dead conifer wood, especially spruce

Inedible — no culinary value

• ▸ Bright orange-yellow, gelatinous fruit bodies, cushion- to disc-shaped
• ▸ Several centimetres wide, limp and slimy
• ▸ Grows on dead conifer wood, often in large clusters
• ▸ Dries out to a reddish-brown, horny film

In Europe the Dacrymyces jelly fungi grow mainly on conifer wood and can be confused with the yellow witch's butter (Tremella mesenterica) found on hardwoods.