  The nature and origin of Lithium rich giant stars is still matter of debate.
In the contest of our spectroscopic survey of giants in the tidal streams of
the Sagittarius dwarf spheroidal (dSph) galaxy, we present the serendipitous
discovery of 2 super Li-rich stars (A(Li)$>$3.5-4.0). Besides D461 in Draco,
these are the only Li-rich stars known in a Local Group dSph galaxy. The high
Li abundance and the low mass of these stars support their origin as due to
fresh Li production in the stars associated with some kind of extra-mixing
process.
