Frozen Flame

2nd-Level Transmutation (Ritual)
Casting Time: 1 minute
Range: Touch
Components: VSM (a source of fire at least as large as a torch)
Duration: 8 hours

The fire’s flames solidify into translucent orange, red, and yellow crystals. For the duration of the spell, the fire continues to radiate heat and light without consuming fuel, and can’t be extinguished by heavy winds.
At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you can target one additional flame for each slot level above 1st.

Source: Knuckleheads & Other Such Curiosities: A Travelers’ Guide to Icewind Dale