blood heat 
noun [mass noun]
The normal body temperature of a healthy human being, about 37 °C or 98.4 °F.In the making of yoghurt the milk is kept at a temperature slightly above blood heat, the preferred conditions of the bacteria that bring about the fermentation....
- Beat the yoghurt in well, cover saucepan and place in a warm position to maintain blood heat.
- The water must not be allowed to boil and should only be hot, as chocolate melts at just above blood heat.
- reconstructive
- reconstructiveness
- reconstructor
- reconsult
- recontest
- recontextualize
- recontinuance
- recontinue
- recontour
- recontract
- reconvalesce
- reconvalescence
- reconvalescent
- reconvene
- reconvent
- reconvention
- reconverge
- reconversion
- reconvert
- reconvertible
- reconvey
- reconveyance
- reconvict
- reconviction
- reconvoke